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Q. |
A particle moves along a rough plane inclined at 30? to the horizontal. The co-efficient of friction between the particle and the plane is 0.1. Its initial velocity is 15 m/sec. The ratio of the velocity of the particle when it move down the plane to that when it move up the plane would be in the regions |
A. | 8 ? 10 |
B. | 5 ? 7 |
C. | 2 ? 3 |
D. | 4 ? 6 |
E. | 10 ? 13 |
Answer» B. 5 ? 7 |
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