Kinematics Question 720
Question: The angular speed of a fly wheel making 120 revolutions/minute it’s[CBSE PMT 1995; AFMC 2002]
Options:
A) $ 2\pi rad/s $
B)$ 4{{\pi }^{2}}rad/s $
C) $ \pi rad/s $
D)$ 4\pi rad/s $
Show Answer
Answer:
Correct Answer: D
Solution:
$ 120rev/\min =120\times \frac{2\pi }{60}rad/\sec =4\pi rad/\sec $
