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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
  • a)
    L/4
  • b)
    2L
  • c)
    4L
  • d)
    L/2
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A particle performing uniform circular motion has angular momentum L. ...
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Community Answer
A particle performing uniform circular motion has angular momentum L. ...
We know that,
L = Iω ...(i)
Kinetic energy, KE = 1/2 Iω2 = 1/2Lω [From Eq (i)]
L=2KE/ω
⇒ 
⇒ L' = L/4
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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 isa)L/4b)2Lc)4Ld)L/2Correct answer is option 'A'. Can you explain this answer?
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