Q. A wheel rotates with a constant angular velocity of 300 rpm. The angle through which the wheel rotates in 1 s is
A) $\pi\ rad$
B) $5\pi\ rad$
C) $10\pi\ rad$
D) $20\pi\ rad$
Explanation
(c) Frequency of wheel, $v = \frac{300}{60} = 5\ rps$. Angle described by wheel in one rotation=$2\pi$ rad
Therefore, angle described by wheel in 1s
$= 2\pi \times 5$ rad
$= 10\pi$ rad.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.