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A disc is rotating with angular velocity ω. If a child sits on it, what is conserved ? [2002]
  • a)
    Linear momentum
  • b)
    Angular momentum
  • c)
    Kinetic energy
  • d)
    Moment of inertia
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A disc is rotating with angular velocity ω. If a child sits on i...
If external torque is zero, angular momentum remains conserved. [External torque is zero because the weight of child acts downward]
L = Iω = constant
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Most Upvoted Answer
A disc is rotating with angular velocity ω. If a child sits on i...
If external torque is zero, angular momentum remains conserved. [External torque is zero because the weight of child acts downward]
L = Iω = constant
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Community Answer
A disc is rotating with angular velocity ω. If a child sits on i...
Angular momentum.
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A disc is rotating with angular velocity ω. If a child sits on it, what is conserved ? [2002]a)Linear momentumb)Angular momentumc)Kinetic energyd)Moment of inertiaCorrect answer is option 'B'. Can you explain this answer?
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