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Physics - Circular Motion Question with Solution | TestHub

PhysicsCircular MotionDynamicsMedium2 minQB

PhysicsMediumsingle choice

A particle of mass m is fixed to one end of a light rigid rod of length l and rotated in a vertical circular path about its other end. The minimum speed of the particle at its lowest point for completing the circle must be

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Answer:

Solution:

With a rod the speed at the top may be zero, so energy conservation between bottom and top gives
$\frac{1}{2} m u^{2} = m g (2 l), i.e. u = 2 g l .$

Stream:JEESubject:PhysicsTopic:Circular MotionSubtopic:Dynamics

⏱ 2mℹ️ Source: QB

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