Pulleys-2

Classical Mechanics Level 1

What is the required force to lift a weight of 100 N in the given diagram?

12.5 75 12 25

Samarth Saini by Samarth Saini , 13, India

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1 solution

In such arrangements, if there are n n moving pulleys, then the required force will be F = W 2 n F=\dfrac{W}{2^n} , where W W is the weight of the body shown. In this case, n = 3 n=3 , and the force is 100 2 3 = 12.5 \dfrac{100}{2^3}=\boxed {12.5} N.

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