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Q.

A small object of uniform density rolls up a curved surface with an initial velocity v. It reaches up to a maximum height of 3v2/4g w.r.t. the initial position. The object is

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a

ring

b

solid sphere

c

hollow sphere

d

disc

answer is D.

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Detailed Solution

mv22+Iω22=mg×3v24g⇒I=mR22For pure rolling condition, v=Rω
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