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Physics - W.E.P. Question with Solution | TestHub

PhysicsW.E.P.MiscellaneousMedium2 minPYQ_2018

PhysicsMediumsingle choice

With what minimum speed $v$ must a small ball should be pushed inside a smooth vertical tube from a height $h$ , so that it may reach the top of the tube? Radius of the tube is $R$ . (Assume radius of cross-section of tube is negligible in comparison to $R$ .)

Options:

Answer:

Solution:

For minimum $v$ , velocity of ball at the topmost point will be zero. Byconservationof energy, $\frac{1}{2} m v^{2} = m g (2 R - h)$ $v = 2 g (2 R - h)$

Stream:AIIMSSubject:PhysicsTopic:W.E.P.Subtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2018

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