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Q.

The speed of revolution of a particle going around a circle is doubled and its angular speed is halved. What happens to the centripetal acceleration

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a

Remains unchanged

b

Halved

c

Doubled

d

Becomes four times

answer is A.

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Detailed Solution

centripetal acceleration is v2r=rωvr=vω

if v is doubled and ω is halved then centripetal acceleration remains unchanged.

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