Question

A block and tackle is a rope and pulley system that uses multiple pulleys. It multiplies a small force into a large one. If a motor has a weight of about 2500 N and people pull 4.0 m (input distance) of rope with a force of 700 N (input) to raise the motor 1.0 m, how efficient is the block and tackle?

Answer 1

Answer:

As you have already learned, work, in the scientific sense, is done only when a force is applied over some distance. Mechanical efficiency also has a very precise, mathematical meaning. Mechanical efficiency is a comparison of the useful work or energy that a mechanical system produces to the work or energy that was put into the system

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