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  4. A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is

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Q. A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is

Delhi UMET/DPMTDelhi UMET/DPMT 2009

Solution:

Force applied by the surface of the inclined table of the ball is normal reaction $N$.
Work done by the table on the ball
[Angle between normal reaction $N$ and displacement s is $ 90^{\circ} $ ]
$ \therefore $ $ W=0 $

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