A cylinder rolls up an inclined plane at an angle of 30°. At the bottom of the inclined plane, the centre of mass of the cylinder has speed of 5 m/s. How long will it take to return to the bottom?
Show Hint
- 2 s
- 3 s
- 1.5 s
- 4 s
The Correct Option is B
Solution and Explanation
Since the energy is conserved, the time to reach the maximum height is the same as the time to return to the bottom, and thus the total time is twice the time taken to reach the maximum height. From the calculations, the time is found to be 3 seconds.
Hence, the correct answer is (b).
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