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Physics - Circular Motion Question with Solution | TestHub

PhysicsCircular MotionDynamicsMedium2 minQB

PhysicsMediumsingle choice

A disc of radius R has a light pole fixed perpendicular to the disc at the circumference which in turn has a pendulum of length $R$ attached to its other end as shown in figure. The disc is rotated with a constant angular velocity $ω$ . The string is making an angle 30° with the rod. Then the angular velocity $ω$ of disc is :-

Options:

Answer:

Solution:

$\frac{m ( \frac{3}{2} R ) ω ^{2}}{mg} = \frac{1}{3} \Rightarrow ω = (\frac{2 g}{3 3})^{1/2}$

Stream:JEESubject:PhysicsTopic:Circular MotionSubtopic:Dynamics

⏱ 2mℹ️ Source: QB

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