Question
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?
Use the following equation to find the answer:
MA=Fo/Fi
(1 point)
Responses
0.3 N
0.3 N
1.7 N
1.7 N
27 N
27 N
3 N
MA = Fo/Fi
3 = Fo/9
Cross multiply:
3 * 9 = Fo
Fo = 27 N
Therefore, the force needed to lift the object is 27 N.