Benjamin applies a force f over a distance x to a, Ask an Expert

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Benjamin applies a force F over a distance x to a ropeconnected to a set of pulleys. THis raises a block of weight W toheigh h above its initial level.

a) what is benjamin's work input?

b) what work is done on the book

c) What is the efficiency of the pulley system?

d) Calculate answers to the above questions given that theforce applied is 75 N over a 12-m distance, the weight of the blockis 300 N, and it is raised a vertical distance of 2 m.

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