Question

Principle of ideal machine

Answer 1

In an ideal machine, the output energy is equal to the input energy. Therefore, mathematically we can express it as Input = Output.

But it's not possible there is some losses in machine due to friction etc.

Answer 2

The term ideal machine refers to a hypothetical mechanical system in which energy and power are not lost or dissipated through friction, deformation, wear, or other inefficiencies. Ideal machines have the theoretical maximum performance, and therefore are used as a baseline for evaluating the performance of real machine systems.

hope helps you.