The gravitational force exerted on the International Space Station by the gravity of the Earth is approximately 0.00026680N.
The force of gravity, or gravitational pressure, pulls objects with mass in the direction of every other. We regularly consider the pressure of gravity from Earth. This force is what continues your body on the ground. but any object with mass exerts a gravitational force on all other items with mass.
The force of appeal on a body with the aid of earth is referred to as gravitational force. Example : The leaves and end result fall from a tree downwards closer to the ground, water in a river flows down streams, a ball thrown up goes to a peak and then returns back on floor are a few examples of motion due to gravitational force.
Earth's gravity comes from all its mass. All its mass makes a blended gravitational pull on all the mass for your body. that's what gives you weight. And if you were on a planet with less mass than Earth, you would weigh less than you do here.
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what is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 29 km/h and the uw, between tires and track is 0.32?
The smallest radius of an unbanked track around which a bicyclist can travel with a speed of 29km/h is 20.66m.
The maximum velocity with which we can travel on a unbanked road is given by,
V = √(urg)
Where you is the coefficient of friction,
R is the radius of the track,
g is the acceleration due to gravity.
Here it is given that the bicyclist travel with the speed of 29km/h and the coefficient of friction between the tyre and the track is 0.32.
Speed = 29km/h = 8.05 m/s.
So, putting the values, we get,
(8.05)² = r(9.8)(0.32)
r = 20.66m.
So, the smallest radius of an unbaked tract is 20.66 m.
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How do I anwer thi? Am I uppoed to decode thi?
I need help becaue I bet $5 that I could beat a friend of mine in thi game. The goal it to turn on the lightbulb
It is necessary to collimate the light source before using the prisim to disperse the light so that the light rays entering the prisim are parallel.
What is collimate?
Collimator is a tool for converting a point source's divergent radiation into a parallel beam. To perform specific measurements in spectroscopy, geometrical optics, and physical optics, the light must be collimated.
An optical collimator is made up of a tube with a convex lens at one end and a variable aperture at the other end that is located in the lens' focal plane. To examine the image without parallax, radiation entering the aperture exits the collimator as a parallel beam.
Therefore collimation is needed for the light rays entering the prism to be parallel.
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Which of the following quantities is conserved in chemical reactions?
A. number of molecules
B. number of particles
C. number of atoms
D. number of moles
a convex mirror has the focal length with magnitude equal to 0.375 m. an object is place 0.431 m in front of the mirror. what is the magnification of the image (answer sign and magnitude)?
The magnitude of the image of the convex mirror is 4.98m.
Convex mirror:
Convex Mirror is a curved mirror where the reflective surface bulges out toward the light source. This bulging-out surface reflects light outwards and is not used to focus light.
Here the focal length is 0.375m and object place is 0.431m.
We have to find the magnitude of the image.
We have the formula for mirror:
1/v + 1/u = 1/f
u = - 0.431
f = 0.375
So 1/v = 1/f - 1/u
= 1/ 0.375 - 1/(- 0.431)
= 1/0.375 + 1/0.431
= 0.806/ 0.1616
= 4.98m
Therefore we get the magnitude of image as 4.98m.
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am radio station broadcasts at a frequency of 887 khz using a 520 kw antenna. how many photons per second does this antenna emit?
The number of photons emitted by the antenna was 78.47x 10^-31 photons per second
define photon?
A photon is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation like as light and radio waves, and the electromagnetic force's force carrier. Because photons have no mass, they always travel at the speed of light in vacuum, which is 299792458 m/s (or around 186,282 mi/s). The photon belongs to the boson class.
n=P/E
E=hf
=6.626x10^-34x10^6
=6.626x10^-28
n=520x10^3/6.626x10^-28
=78.47x10^31 photons per second
therefore the number of photons emitted by the antenna was =78.47x10^31
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you set the cylinder and hold it at rest at the top of the ramp. how much total energy (in j) does the block have at the top of the ramp?
The energy is only potential energy at the top of the ramp., which is U=1.14J.
Potential energy is the energy stored in the body due to its position or configuration.
We know that potential energy U =mgh
where,
m is mass
g is gravity
h is height
also,
h =lsin15
l = 1m
so the energy is
U=mgh
U= 0.450 * 9.8 * 0.2588
U = 1.14J
Since there is no friction, hence all the total energy at the top, which is purely potential, gets converted to fully kinetic energy at the bottom.
Hence, at the bottom the total energy is
U = 1.14J
This is because of the principle of energy conservation, when there are no resistive forces, the energy remains conserved.
Thus, the total energy at the top is U=1.14J
With no friction, the total energy at the bottom is U = 1.14J.
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A student determines the average speed of a bubble rising through a liquid at constant speed. When the student starts the stopwatch the bubble is at position P.
After 2.0 s the bubble is at position Q.
What is the speed of the bubble between P and Q?
The speed of the bubble between P and Q, given that the time required is 2.0 seconds, is 3.7 cm/s
How do I determine the speed of the bubble?We know that speed is defined as the distance travelled per unit. It can be expressed as:
Speed = distance / time
First, we shall determine the distance between P and Q. This is given below:
Location of P = 25.70 cmLocation of Q = 18.30 cmDistance =?Distance = 25.70 - 18.30
Distance = 7.40 cm
Finally, we shall determine the speed of the bubble. Details below:
Distance = 7.40 cmTime = 2.0 secondsSpeed of bubble =?Speed = distance / time
Speed = 7.40 / 2
Speed = 3.7 cm/s
Thus, the speed of the bubble is 3.7 cm/s
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Missing part of question:
See attached photo
Two waves have the same frequency. What other characteristic must be the same for these waves?.
The wave characteristic that is the same for both waves is wavelength.
Two waves with the same frequency will also have the same wavelength, amplitude, speed, and period. When two waves are travelling at the same frequency, it denotes that their duration and amplitude are also the same.When two waves of the same frequency and amplitude interfere constructively, their peaks and troughs align as shown in diagram A above. As a result, the original waves' amplitude is doubled, resulting in a sound wave that is twice as loud.Thus, Equal frequencies are shared by two waves moving through the same region in the same direction.
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. a boat floating in fresh water displaces 16,000 n of water. how many newtons of saltwater would it displace if it floats in saltwater of specific gravity 1.17
13954 Newtons of the saltwater will be displaced by the boat if it float on the saltwater.
The boat floating in the fresh water displaces 16000N.
We know, the weight of the liquid displaced by the boat is equal to the buoyancy of the boat.
So,
B = 16000N.
When the boat is put into the saltwater, its buoyancy will be,
B = Vpg
Where,
V is the volume of the saltwater displaced,
p is the density of the saltwater,
g is the acceleration due to gravity.
Putting values,
16000 = V(1.17)(9.8)
V = 1395.4 m³.
The weight of the saltwater will be,
Weight = 1395.4 x 10
Weight of the water displaced 13954 Newtons.
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An atom has 11 protons, 10 electrons and 13 neutrons. Is this a cation or an anion?.
An atom has eleven protons, 10 electrons, and thirteen neutrons. that is an anion.
Every atom includes a nucleus and one or greater electrons positive to the nucleus. The nucleus is manufactured from one or extra protons and some of neutrons. most effective the maximum not unusual form of hydrogen has no neutrons. each strong, liquid, gas, and plasma consists of neutral or ionized atoms. An atom is any particle of matter at its maximum simple degree which incorporates as a minimum one proton. proper here are some examples of the atoms: hydrogen (H) and neon (Ne).
An atom is the smallest unit of detail. In an atom, subatomic debris like protons and neutrons are in the extranuclear aspect. Atoms be part of together to form molecules. A water molecule has 3 atoms: hydrogens (H) atoms and one oxygen (O) atom. it actually is why water is on occasion known as H2O. A single drop of water includes billions of water molecules.
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A classic mind-bender: if a ball is dropped from rest from an elevated position at the same instant that a second ball is launched horizontally (from the same height), then which ball will hit the ground first? assume the balls behave as projectiles.
If a ball is dropped from an elevated position and at the same time and same height, a second ball is launched horizontally, then both ball will hit the ground together. It can happen because the only force act to both balls vertically is only gravity force.
In this experiment, although both balls have very different horizontal velocities, but it does not affect the vertical motion. Both balls start with zero vertical velocity, and accelerate at the same rate of gravity.
What is gravity?Gravity is a force that pulling together all matter. The more matter, the more gravity, so anything that have such a lot of matter like planets, moons, or stars pull more strongly. Gravity also affected by the mass of the objects and distance between objects.
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The relationship of potential energy is that when ____________ increases or ____________ increases, potential energy will increase also.
The relationship of potential energy is that when mass of the object increases or height of the object increases, potential energy will increase also.
What is gravitational potential energy?The energy that an item has or acquires when its location changes as a result of being in a gravitational field is known as gravitational potential energy. Gravitational potential energy can be defined as an energy that has a connection to gravitational force or gravity.
Take two pencils for the most typical illustration to help you grasp the idea of gravitational potential energy. Both are held above the table, with one at the table. We may now assert that the pencil that is higher than the table will have more gravitational potential energy.
Hence; potential energy of an object on earth's surface can be increased by increasing mass of the object and by increasing height of the object.
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it is moving day and you are in a hurry! you drop a fridge from a height of 75.0m out a window. a stool is thrown down from the same height 0.091s later if both objects hit the ground at the same time what was the initial
Answer:
Explanation:
Given:
H = 75 m
Δt = 0.091 s
g =9.81 m/s²
_________
V₀ - ?
Assume that the stool fell freely, then the time of its fall:
H = g·t²/2
t = √ (2·H / g) = √ (2*75 / 9.81) ≈ 3.910 s
The refrigerator was thrown down with initial speed and fell:
t₁ = t - Δt = 3.910 - 0.091 ≈ 3.82 s
Find the initial chip of the refrigerator:
H = V₀·t₁ + g·t₁²/2
V₀·t₁ = H - g·t₁²/2
V₀ =H / t₁ - g·t₁ / 2
V₀ = 75 / 3.82 - 9.81·3.82 / 2 ≈ 0.90 m/s
So, at first, the stool is simply released from the hands, and the refrigerator is thrown down with the initial speed 0.90 m/s
The battleship and enemy ships A and B lie along a straight line. Neglect air friction. A battleship simultaneously fires two shells with the same initial velocity at these two enemy ships. If the shells follow the parabolic trajectories shown in the figure, which ship gets hit first?
1. need more information
2. both hit at the same time
3. A
4. B
Answer: A
Explanation:
it is closer
when the angle of inclination of the inclined plane increases, what will happen to the acceleration along the inclined plane?
When there is acceleration along the inclined plane then accelerations increase as incline angles increase.
angle of inclination :
The angle between a line's inclination and the x-positive axis's direction is known as the inclination.This angle's value ranges from 0° to 180°.It is measured counterclockwise around the positive x-axis direction.The force component parallel to the incline rises as the angle increases, while the force component perpendicular to the incline falls. The acceleration is brought on by the parallel portion of the weight vector.
Therefore, accelerations increase as incline angles increase.
When there is acceleration along the inclined plane then accelerations increase as incline angles increase.
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A cylindrical can without a top is made out of metal material with a total area of 1500π cm2. Find the dimensions that will maximize the volume held by the can.
The dimension of the cylinder will be r = 8.92 cm and h = 17.86 cm.
What is dimensions?
An item, region, or space's dimensions are its size or distance from another point in space. The metric of anything's length, width, and height can be put more simply.
Length and Breadth are a common way to convey dimensions.
Main body:
Volume of cylinder, [tex]v = \pi r^{2}h[/tex]
Surface area = [tex]2\pi r^{2} + 2\pi rh[/tex]
given surface area = [tex]1500 cm^{2}[/tex]
[tex]h=(750/\pi r)-r ---(1)[/tex]
V = [tex]\pi r^{2}\left \{ {(750/\pi r)-h[/tex]
V = 750-3[tex]\pi r^{2}[/tex]
put V' = 0
0 = 750-3[tex]\pi r^{2}[/tex]
r≈ 8.92 cm
By substituting the value of r in eq (1)
we get h = 17.86 cm
therefore, the dimension of cylinder are r = 8.92 cm and h = 17.86 cm
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(figure 1) shows a bar magnet being pushed toward a conducting loop from below, along the axis of the loop.
There are two varieties of bar-shaped rectangular magnets.
What different types of rectangular bar magnets are there?Cylindrical bar magnets and rectangular bar magnets are the two varieties of rectangular magnets that resemble bars.A strong magnetic field can be created by either kind of bar magnet.The term "rod magnet" also refers to a cylindrical bar magnet.Current induction occurs in the coil as a result of an increase in current and magnetic field.Lenz law states that the coil induces current in an anticlockwise direction.The resultant force on a loop in a constant magnetic field is zero.As shown, one can define a magnetic moment of direction and magnitude IA.In a magnetic field with a magnetic moment pointing to the left, a current loop exists that decreases in magnitude to the right.To learn more about rectangular bar magnets refer to:
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51. | A 5.0 kg wooden sled is launched up a 25° snow-covered
slope with an initial speed of 10 m/s.
a. What vertical height does the sled reach above its starting point?
b. What is the sled's speed when it slides back down to its start-
ing point?
(a) The vertical height the sled reached above its starting point is 0.91 m.
(b) The sled's speed when it slides back down to its starting point is 18.43 m/s.
What is the maximum height reached by the sled?
The maximum height reached by the sled is calculated by applying the following kinematic equation as follows;
H = u²sin²θ/2g
where;
u is the initial velocity of the sled;θ is the angle of projectiong is acceleration due to gravityH = (10² x (sin 25)²) / (2 x 9.8)
H = 0.91 m
The sled's speed when it slides back down to its starting point can be calculated by applying the following equation;
The time of flight of the sled is calculated as;
t = 2u sinθ / g
t = (2 x 10 x sin25) / 9.8
t = 0.86 s
The final velocity of the sled is calculated as;
v = u + gt
v = 10 + 9.8(0.86)
v = 18.43 m/s
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determine the displacement of an airplane that experiences uniform acceleration from 66 m/s to 88 m/s in 12 s
The displacement of a plane that is uniformly accelerated from 66 m/s to 88 m/s in 12 s is 131.76 m.
Briefing :There are three equations that correlate displacement to two of the other three parameters we use to describe motion: time, velocity, and acceleration when acceleration is constant.
Equation :Firstly, the distance for uniformly accelerating motion can be found by multiplying the average velocity by the time.
d=[tex]\frac{1}{2}[/tex][tex](v_{f} + v_{i} )[/tex][tex](t)[/tex]
The second equation that relates displacement, time, initial velocity, and final velocity is generated by substituting this equation into equation 1.
[tex]v_{i} t+\frac{1}{2} at^{2}[/tex]
The third equation is formed by combining 1 and 2. If we solve the first equation for t and then substitute it into the second equation, we get
[tex]v_{f} ^{2} =v^{2} _{i} + 2ad[/tex]
which gives us when simplified:
[tex]d=\frac{1}{2} at^{2}[/tex]
So from the question,
[tex]v_{f} =v_{i} +at\\88=66+12a\\12a=88-66\\12a=22\\a=\frac{22}{12} \\a=1.83 m/s^{2} \\[/tex]
Then we substitute the value of a into the final equation,
[tex]d=\frac{1}{2}at^{2}\\ d= \frac{1}{2}1.83*12^{2} \\d= \frac{263.52}{2} \\d=131.76 m[/tex]
Therefore the displacement is 131.76m.
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A hamster in a ball begins its journey 5 feet to the left of a refrigerator, travels 20 feet to the right of the refrigerator, and ends its journey directly in front of the refrigerator. If negative values are assigned to positions to the left of its starting position and positive values are assigned to positions to the right of its starting position, what is the displacement of the hamster?.
The displacement of the hamster is -5 feet.
In this case, we know that the hamster in the ball starts moving 5 feet to the left of the refrigerator walks 20 feet to the right of the refrigerator, and ends just in front of the refrigerator.
In fact, all quantities in physics can be divided into vector quantities and scalar quantities. A vector quantity has both magnitude and direction, while a scalar quantity has only magnitude and no direction. Vectors are indicated using directional designations in bold and arrows written above the vectors as is known. Note that displacement is related to the distance moved in a particular direction.
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What are examples of malicious codes?.
Malicious code examples include computer viruses, worms, Trojan horses, logic bombs, spyware, adware, and backdoor programmes that take advantage of common system flaws. Malicious programmes can enter a system through visiting infected websites or by clicking on a dubious email link or attachment.
What are some cyber awareness instances of harmful code?Viruses, Trojan horses, worms, macros, and scripts are examples of malicious programming. Email attachments, downloading files, and accessing compromised websites may all transmit malicious malware.
Phishing emails are by far the most popular way for hackers and state-sponsored hacking groups to disseminate malware. Hackers have gotten quite good at creating emails that fool recipients into clicking links or downloading files with harmful software.
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sodium vapor is used in some street lamps. a typical lamp contains 2.00 g of sodium vapor at 31 oc and 1140. torr. what is the volume of the lamp? rA. 0.0438 LB. 1.45 LC. 3.20 LD. 1140 LE. 1.00 L
The supplied statement states that the sodium vapour lamp's volume is 20 LD torr.
What in physics is lamp?From radio waves with wavelengths measured in meters to gamma rays with wavelengths shorter than around 1 1011 meters, electromagnetic radiation occurs throughout a very broad range of wavelengths.
How is a lamp made?Photons are bundles of something like the electromagnetic field which thus contain a set amount of energy and are the building blocks of light. You might count particles or even conduct measurements on something like a single photon using tests that are sensitive enough. Even light has been momentarily frozen by researchers.
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Expansionary monetary policies would likely cause
farmland prices to increase due to rising interest
rates resulting from a crowding-out effect in credit
markets.
True or false
Answer:
TRUE
Explanation:i've seen one and please make me the brainlest
Many competitive swimmers practice in loose-fitting, baggy swimsuits called drag suits. In 1–2 sentences, explain how, in terms of the forces acting on a swimmer, wearing a drag suit differs from wearing a tight-fitting racing suit, and why practicing in a drag suit can make a swimmer stronger
A swimmer cannot go forward while wearing a drag suit because it creates more pressure and friction with the water than a racing suit does, and the swimmer must use more power to get past it.
As a swimmer becomes accustomed to exerting more force, his or her muscles work out and help build strength.
Competitive swimmers may wear a pair of baggy square cut or brief-style trunks over their regular suit to add additional resistance (or "drag") from the water. In comparison to swimming without a drag suit, the swimmer can now get more out of their workout.Drag, lift, gravity, and buoyancy are the forces at play. The primary propelling forces that swimmers employ are lift and drag. Drag, often known as resistance, can be divided into three primary groups: eddy resistance, skin friction, and frontal resistance.
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If a coil of wire in a magnetic field rotates 60 degrees, it provides an emf averaging 0.17 v . if the coil consists of 3 loops of radius 0.50 m and the magnetic field has a strength of 9.0 mt , how long does it take the coil to complete its rotation? assume the coil is initially facing perpendicular to the field.
Answer: i don't know
Explanation: because i'm in 6th grade
How will the potential energies of the object and the spring compare after the distances are doubled? the gravitational potential energy of the object will be two times greater than the elastic potential energy of the spring. The elastic potential energy of the spring will be four times greater than the gravitational potential energy of the object. The elastic potential energy of the spring will be two times greater than the gravitational potential energy of the object. The potential energies will remain equal to one another.
The correct answer is The elastic potential energy of the spring will be two times greater than the gravitational potential energy of the object.
The formula for Gravitational potential energy is= mgh where
m=mass
g= 9.8
h=height.
On the other hand the formula for Elastic potential energy is (1/2)KX^2
where K is the spring constant and x is the displacement of the string. By changing the values of H and X, we will see elastic potential energy will remain more.
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The answer is C. The elastic potential energy of the spring will be two times greater than the gravitational potential energy of the object.
a 4.0 kg mass (m1) moving at 4.0 m/s collides with a stationary 8.0 kg mass (m2) at rest. if m1 moves at 2.0 m/s after the collision, what is the velocity of m2 after the collision?
The velocity of m2 after the collision is 1 m/s.
The conservation of momentum states that, inside some problem domain, the quantity of momentum remains regular; momentum is neither created nor destroyed, however, best changed via the motion of forces as described via Newton's legal guidelines of motion.
Calculation:-
Given,
mass 1 = 4 kg
v1 = 4 m/s
mass 2 = 8 kg
v2 = 0 stationary
final velocity V'1 = 2 m/s
Let the final velocity of V'2 =?
applying conservation of linear momentum
m1v1 + m2V2 = mV'1 + m2V'2
4× 4 + 8×0 = 4×2 + 8×V'2
16 = 8 +8V'2
V'2 = 8/8
= 1 m/s
The regulation of conservation of momentum states that in an isolated system the entire momentum of or more of our bodies performing upon each other remains steady until an outside pressure is implemented. therefore, momentum can neither be created nor destroyed.
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Given a wave of a particular wavelength and amplitude, what must be the amplitude, wavelength, and phase change of a wave you add to this wave to create a wave of twice the amplitude?.
The added wave must have the same amplitude the same wavelength and a phase difference of 180 degrees with respect to the original wave.
As turbulence or vibration increases in the medium the amplitude of the wave increases. Due to more vibrations, an increase in wavelength results in an increase in wave amplitude height. Wave amplitude is the wave height measured from the highest point of the wave to the lowest point of the wave.
Wavelength is the length of the wave from one peak to the next. Amplitude is the maximum disturbance from the equilibrium state of the medium. For horizontal string waves, this value is equal to half the vertical distance between the crests and troughs of the wave. The wavelength λ is the distance between two adjacent crests, expressed in meters. Amplitude is the strength of these radio frequencies. Finally, phase is the relationship shared by multiple radio signals sharing the same space and frequency.
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when glasses (or contact lenses) are used to correct farsightedness, where should the corrective lens form an image of an object located between the eye and the near point in order for the eye to form a clear image of that object?
when glasses (or contact lenses) are used to correct farsightedness the lens should form the image at the near point.
What do you mean by farsightedness?With farsightedness (hyperopia), a common visual issue, you may be able to see far objects clearly but have hazy vision of nearby items.
Your capacity to focus is influenced by how farsighted you are. Others with severe farsightedness might only be able to see objects that are far away clearly, but people with mild farsightedness might be able to see objects that are nearby clearly.
The tendency to be farsighted is typically present at birth and runs in families. Glasses or contact lenses make it simple to treat this disease. Surgery is yet another remedy.
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what is the moment of inertia of the object starting from rest if it has a final velocity of 5.3 m/s? express the moment of inertia as a multiple of mr2 , where m is the mass of the object and r is its radius.
The moment of inertia is I = 0.126*R^2*M
Then We can calculate the moment of inertia of an object that starts from rest and also has a final velocity using the energy conservation equation.
Then Ek1 + Ep1 is = Ek2 + Ep2, where
After that Ek1 is = the kinetic energy of the object before rolling down
Now Ep1 is = potential energy of the object
Then Ek2 is = kinetic energy when the object comes down
After that Ep2 is = the potential energy of the object at the bottom.
Now We have the following:-
Then Ek1 = 0
Ep1 = M*g*h
After that Ek2 = ((I*w)/2) + ((M*v^2)/2)
Then Ep2 = 0
Now we Replacing values is:
That is 0 + M*g*h = ((I*w)/2) + ((M*v^2)/2) + 0
where:
M is = mass of the object
g is = gravitational acceleration
I is = moment of the inertia
w is = angular velocity = v/R
h is = height
M*g*h is = ((1/2) * I * (v^2/R^2)) + ((M*v^2)/2)
M*9.8*2 is = (I*(5.9^2)/(2*R^2)) + ((5.9^2 * M)/2)
19.6 * M is = ((17.4*I)/R^2) + 17.4*M
Now We mention Clearing I, we have:
Therefore, I am = 0.126*R^2*M
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