Two identical balls of equal masses A and B, are lying on a smooth surface as shown in the figure. Ball A hits the ball B (which is at rest) with a velocity v = 16 m/s. What should be the minimum value of coefficient of restitution e between A and B so that B just reaches the highest point of inclined plane. (g = 10 m/s 2 )
Text Solution
Verified by ExpertsThe correct answer is:
B
e = (v 2 –v 1 )/ v, mv = mv 1 + mv 2
1/2mv 2 2 = mg × J
v 2 = 10 m/s, 16 = v 1 + 10, v 1 = 6m/s
e = (10–6)/16 = ¼
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