Question

In actual machines ____________.

• A. mechanical advantage is greater than velocity ratio
• B. mechanical advantage is equal to velocity ratio
• C. mechanical advantage is less than velocity ratio
• D. mechanical advantage is unity

Hint:

To quickly solve this:
Recall that friction always reduces output force.
Since \(\text{Mechanical Advantage} = \text{Efficiency} \times \text{Velocity Ratio}\), and efficiency in real life is always less than 1, Mechanical Advantage must be less than Velocity Ratio.

Answer 1

The Correct Option is C