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6. A 1.0 kg ball drops vertically into a floor from aheight of 25cm. It rebounds to a height of 4cm.The coefficient of restitution for the collision is-(A) 0.16(B) 0.32(C)0.40(D) 0.56Tiperiod of particle underanina SHM is 16 |
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Answer» U = sqrt(2gH)= sqrt(2 × 9.8 × 0.25) v = sqrt(2gh)= sqrt(2 × 9.8 × 0.04) e = v / u= [sqrt(2 × 9.8 × 0.04)] / [sqrt(2 × 9.8 × 0.25)]= .2/.5 Coefficient of restitution is 0.40 (C) is correct option |
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