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Physics - Rotation Question with Solution | TestHub

PhysicsRotationRotational KinematicsMedium2 minPYQ_2020

PhysicsMediumsingle choice

A bucket containing water is revolved in a vertical circle of radius ' $r^{'}$ . To prevent the water from falling down, the minimum frequency of revolution required is $[g =$ acceleration due to gravity $]$

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Answer:

Solution:

For minimum velocity at the highest point we should have $mr ω^{2} = mg$ $∴ ω^{2} = \frac{g}{r}$ or $ω = \frac{g}{r}$ $2 π f f = \frac{g}{r} = \frac{1}{2 π} \frac{g}{r}$

Stream:MHT_CETSubject:PhysicsTopic:RotationSubtopic:Rotational Kinematics

⏱ 2mℹ️ Source: PYQ_2020

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