Question

In an ideal machine, mechanical advantage is to velocity ratio.

• A. less than
• B. equal to
• C. greater than

Answer 1

The correct option is B equal to

An ideal machine is free from any friction and its efficiency is 100% or 1.
The efficiency of a machine is related to mechanical advantage $M.A$ and velocity ratio $V.R$.
Efficiency $\left(\eta \right)$ = $\frac{\text{Mechanical advantage (MA)}}{\text{Velocity ratio (VR)}}$
Since in an ideal machine, efficiency = 1
So, Mechanical advantage (MA) = Velocity ratio (VR)