Question

What is the relationship between the mechanical advantage and the velocity ratio for an ideal machine

Answer 1

1. The efficiency in terms of mechanical advantage and the velocity ratio is,
2. $Efficiency=\frac{Mechanicaladvantage}{Velocityratio}\times 100\%$
3. For an ideal machine, work output is equal to the work input, so the efficiency is equal to $100\%$.
4. Thus, for the ideal machine, the mechanical advantage $\left(\mathrm{MA}\right)$ is numerically equal to the velocity ratio $\left(\mathrm{VR}\right)$.