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A wheel at rest has M.I. 2/(pi^2) kgm^2....

A wheel at rest has M.I. `2/(pi^2) kgm^2`. It is rotated by a `60W` motor for one minute. The number of rotations made by the wheel in one minute is

A

90

B

450

C

1800

D

1200

Text Solution

Verified by Experts

The correct Answer is:
C
`p = (tautheta)/t , theta = 2piN `
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NARAYNA-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -EXERCISE - I(H.W)
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  10. A wheel at rest has M.I. 2/(pi^2) kgm^2. It is rotated by a 60W motor ...

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  11. The shaft of a motor is making 1260rpm. The torque supplied by the mot...

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