pivot point, also known as a fulcrum. The long part of the lever is called the lever arm or lever handle, while the shorter part is called the load arm or load handle. The location and length of the lever arms determine the mechanical advantage of the lever, which is the ratio of the output force to the input force. Levers are simple machines that are used to lift, move or apply force to objects with less effort than would be required using only brute strength.
