Output energy is the useful work done by a machine.
Hence, the given statement is true.
Assertion (A): In a practical simple machine work done by the effort is always equal to the work done on the load.
Reason (R): No energy is lost in a simple machine.
______ of a machine indicates how well its input energy is converted to useful output energy.
The energy supplied by a machine in doing some mechanical work is called input energy.
The output energy of a real-life machine is less than input energy because of :
Give one word for this-
Useful work done by the machine