Question

One of the simplest machines is the lever, which is a rigid bar pivoted at a fixed place called what?

Answer 1

fulcrum

One of the simplest machines is the lever, which is a rigid bar pivoted at a fixed place called the fulcrum. Torques are involved in levers, since there is rotation about a pivot point. Distances from the physical pivot of the lever are crucial, and we can obtain a useful expression for the MA in terms of these distances.