A pulley system has a mechanical advantage of 3, and an object weighing 9 Newtons must be lifted 15 meters. How much force must be applied to lift the object?

Question

Use the following equation to find the answer:

MA=Fo/Fi

Answer 1

Where MA is the mechanical advantage, Fo is the force applied to the system, and Fi is the force required to lift the object.

Fi = Fo/MA

Fi = 9 N/3

Fi = 3 N

Therefore, 3 Newtons of force must be applied to lift the object 15 meters.