15. A girl pushes a box that has a mass of 85 kg up an incline. If the giri exerts a force

of 200 N along the incline what is the mechanical advantage of the incline?

Answer;

M. A = 4.25

Explanation;

Mechanical advantage is the ratio of the force required to do something in comparison to the actual force required using a simple machine.

It is the ratio of output force to the input force.

M. A = Output Force / Input Force

Out put force 85 Kg = 850 N

Input force = 200 N

Therefore;

M. A = 850 N/200 N

= 4.25