The question below to me doesn't make sense, the answer to this question is C but why does the useful output = gravitational potential energy, and the total input = work done?
Efficiency questions can depend on what the expected purpose is.
Sliding some object up a ramp (aka inclined plane) is a way of increasing the gpe (height) of the object when you wouldnt be able to lift it straight upwards.
Efficiency questions can depend on what the expected purpose is.
Sliding some object up a ramp (aka inclined plane) is a way of increasing the gpe (height) of the object when you wouldnt be able to lift it straight upwards.