Question

What is the angular velocity in rad/s of a fly wheel making $300\text{r.p.m}$?

• A. $600\pi$
• B. $20\pi$
• C. $10\pi$
• D. $30$

Answer 1

The correct option is C $10\pi$

$\omega =300\text{rpm}=300\times \frac{2\pi }{60}=10\pi \text{rad/s}$
Since 1 revolution corresponds to $2\pi$ radian.