System of Particles and Rotational Motion - Result Question 16

16. If a flywheel makes 120 revolutions/minute, then its angular speed will be

(a) 8πrad/sec

(b) 6πrad/sec

(c) 4πrad/sec

(d) 2πrad/s

[1996]

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Answer:

Correct Answer: 16. (c)

Solution:

  1. (c) Angular speed, ω=120×2π60=4πrad/sec


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