A small object of uniform density rolls up a curved surface with an initial velocity v. It reaches up to a maximum height of 3v24g with respect to 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
12mv21+K2R2=mgh⇒12mv21+K2R2=mg3v24g⇒K2R2=12⇒for a disc