Question

A movable pulley is used as :

(a) a force multiplier

(b) a speed multiplier

(c) a device to change the direction of effort

(d) an energy multiplier

Answer 1

The mechanical advantage of movable pulley is greater than 1. Thus, using a single movable pulley, the load can be lifted by applying an effort equal to half the load (in ideal situation), i.e. the single movable pulley acts as a force multiplier.