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Question

# What is the mechanical advantage of a single movable pulley in the ideal case?

A

2

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B

less than 2

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C

less than 1

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D

equal to 1

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Solution

## The correct option is A 2 Single movable pulley in an ideal situation acts as a force multiplier. The pulley is supported on both the sides by tension T and is pulled up by half the distance. Load L is balanced by the effort. L = T + T = 2T, E = T M.A. = LoadEffort = 2TT = 2 M.A. in ideal case = 2 Using single movable pulley, the load can be lifted by applying an effort equal to half the load (in ideal situation).

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