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

PhysicsW.E.P.MiscellaneousMedium2 minQB

PhysicsMediumsingle choice

A small ball of mass $m$ starts at a point $A$ with speed $v_{o}$ and moves along a frictionless track $AB$ as shown. The track $BC$ has coefficient of friction $μ$ . The ball comes to stop at $C$ after travelling a distance $L$ which is:

Options:

Answer:

Solution:

Initial speed at point A, $u = v_{0}$ Speed at point $B, v =$ ? $v^{2} - u^{2} = 2 g h v^{2} = v_{0}^{2} + 2 g h$ Let ball travels distance ' $S$ ' before coming to rest $S = \frac{v ^{2}}{2 μg} = \frac{v _{0}^{2} + 2 g h}{2 μg} = \frac{v _{0}^{2}}{2 μg} + \frac{2 g h}{2 μg} = \frac{h}{μ} + \frac{v _{0}^{2}}{2 μg}$

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

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