Question

Explain how the efficiency of an ideal machine compares with the efficiency of a real machine

Answer 1

100% efficincy vs not completely 100%

Step-by-step explanation:

So in an ideal machine, the output work would be greater than the input work, which is impossible. However, for a real machine, the input work would be greater than the output work, since the machine uses some of that work for the output work.

Answer 2

Since in ideal machines we assume that all frictional forces and all other resistive forces are not present.

So all those frictional loses are zero in case of ideal machines

while in real machines we can not reduce these loses to be zero

now in this case we will say that efficiency of all real machines must be less than the efficiency of ideal machines

so we can say

`\eta_(ideal) > \eta_(real)`