The of a machine is the amount by which a machine multiplies the force applied to it when accounting for energy lost due to friction.

A machine is any device that makes work easier. The velocity ratio of a machine is the ratio of load and effort. The efficiency of a machine is the ratio of work input to work output. Mechanical advantage of a machine is the number of times the input force or force exerted on the machine is multiplied by the machine. It is given by the ratio of the output force to the input force. Therefore, the correct answer is the mechanical advantage.

The answer is b hope this