Question

Can a machine have mechanical advantage greater than its velocity ratio? Explain briefly with the reason for your answer. $\left[2\text{marks}\right]$

Answer 1

No, a machine cannot have mechanical advantage greater than velocity ratio. $\left[1\text{mark}\right]$
The efficiency of a machine is the ratio of the mechanical advantage and velocity ratio; for the mechanical advantage to be greater than velocity ratio, it makes the efficiency of the machine greater than $1$. It is obviously impossible for any machine to have more than $100\%$ efficiency. $\left[1\text{mark}\right]$