The angular velocity of a rotating disc is doubled while its radius remains unchanged

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

The angular velocity of a rotating disc is doubled while its radius remains unchanged. How does the magnitude of centripetal acceleration of a point on the rim change? (a) 22 times the original value (b) It remains unchanged (c) 44 times the original value (d) 12\dfrac{1}{2} of the original value

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