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Physics - Rotation Question with Solution | TestHub

PhysicsRotationAngular momentumMedium2 minPYQ_2003

PhysicsMediumsingle choice

A particle performing uniform circular motion has angular frequency is doubled & its kinetic energy halved, then the new angular momentum is

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Solution:

Angular momentum $\propto \frac{1}{Angular frequency} \propto$ Kinetic energy $\Rightarrow L = \frac{K . E .}{w}$ $\frac{L _{1}}{L _{2}} = (\frac{K . E _{1}}{w _{1}}) \times \frac{w _{2}}{KE _{2}} = 4 \Rightarrow L_{2} = \frac{L}{4}$

Stream:JEESubject:PhysicsTopic:RotationSubtopic:Angular momentum

⏱ 2mℹ️ Source: PYQ_2003

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