Question

Which statement describes actual mechanical advantage (AMA)?

A. It assumes ideal conditions, without friction, heat, etc.
B. It describes the turning effect of a force.
C. It is a ratio of distances.
D. It is a ratio of forces.

Answer 1

Actual mechanical advantage (AMA) is a ratio of the actual output force to the input force in a machine, considering real-world factors like friction.

Step-by-step explanation:

The statement that describes actual mechanical advantage (AMA) is that it is a ratio of forces. In the context of simple machines, the actual mechanical advantage is the actual force output of the machine divided by the force input into the machine. Unlike the ideal mechanical advantage (IMA), which assumes no energy is lost to friction or other inefficiencies, the actual mechanical advantage takes these real-world factors into account, resulting in a number that is usually less than the IMA.