#### Question

The mechanical advantage of an ideal single movable pulley is 1 (b) 2 (c) less than 2 (d) less than 1?

#### Solution

The mechanical advantage of an ideal single movable pulley is 2.

Derivation: Consider the diagram given below:

Here the load L is balance by the tension in two segments of the string and the effort E balances the tension T at the free end, so

L = T + T = 2T and E = T

Assumption: Weight of the pulley is negligible.

We know that,

M.A =`"πΏπππ (πΏ)"/"πΈπππππ‘ (πΈ)"`= `"2π"/"π"`=2

Thus, a single movable pulley has a M.A. equal to 2.

Is there an error in this question or solution?

Solution The Mechanical Advantage of an Ideal Single Movable Pulley is 1 (B) 2 (C) Less than 2 (D) Less than 1? Concept: Concept of Pulley System.