Question

A particle performing uniform circular motion has angular momentum L. if Its angular frequency is doubled and its kinetic energy halved ,then the new angular momentum is ? ​

Answer 1

Explanation:- Angular momentum , L = Iω __(I)

kinetic energy , K = 1/2Iω² = 1/2Lω __from (I)

∴ L = 2 k/ω ______(III)

∵if angular frequency is doubled and kinetic energy halved .

∴ L' = 2(k/2)/2ω [from (III) equs]

⟹ L' = L/4 Answer

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Answer 2

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