Engineering High School

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Help Please Literally

Answers

Answer 1

The effort force of a user has to 30 lbs to to exert on the rope to lift the 60 lb load (2 Strands).

What is effort force?The pressure applied to propel an item long distances. Effort force: The force that a work force must overcome in order to operate a basic machine on an item. optimal mechanical benefit: a mechanism's multiplier, which increases the force applied to it.Work is defined by the scientific formula w = f x d, which states that force times distance equals work. Simple machines cannot alter the quantity of work completed, but they may lessen the amount of force needed to do the task!The load is typically divided by the number of ropes to determine the effort force. The mass must be divided by the quantity of ropes.

Given data :

Load = 60 lbs

Ropes = 2

Effort force = 60 / 2 = 30 lbs.

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Related Questions

Consider the deflection (based on choices of E and I) and the weight of the material. How would you find a balance between the needed structural performance and weight?

Answers

Finding a balance between structural performance and weight is a trade-off that engineers often have to consider when designing structures. In terms of deflection, the modulus of elasticity (E) and the moment of inertia (I) of the material are important factors that affect the structural performance of a structure. A higher E value indicates that a material is stiffer, and a higher I value indicates that a material is more resistant to bending.

The weight of the material is also an important factor to consider, as it affects the overall weight of the structure, which can have an impact on the cost and ease of transportation, assembly, and maintenance of the structure.

One approach to finding a balance between structural performance and weight is to use a material with a high E and I value, while also being lightweight. For example, using a composite material made of carbon fiber reinforced plastic (CFRP) can provide a high E and I value while also being lightweight.

Another approach is to use a combination of materials. For example, using a lightweight core material such as foam and sandwiching it between two stiffer and stronger materials such as aluminum or steel. This can provide a balance between structural performance and weight, as the core material provides the necessary strength and stiffness, while the outer layers provide the necessary support and protection.

Additionally, engineers use optimization techniques such as Finite Element Analysis (FEA) to determine the optimal design, thickness, and orientation of the material to minimize weight while still maintaining structural performance.

Ultimately, finding a balance between structural performance and weight is a design decision that depends on the specific requirements of the structure and the priorities of the project.

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