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13. A coin undergoes pure rolling on a rough incline ofangle of inclination 30^° from a height h= 10 m. Thetime required by the coin to reach the bottom point(O) of incline, is (1) \sqrt3 s(2) 3/\sqrt3 s(3) 3/\sqrt2 s(4) 2/\sqrt{} s |
| Answer» 13. A coin undergoes pure rolling on a rough incline ofangle of inclination 30^° from a height h= 10 m. Thetime required by the coin to reach the bottom point(O) of incline, is (1) \sqrt3 s(2) 3/\sqrt3 s(3) 3/\sqrt2 s(4) 2/\sqrt{} s | |