NEET Physics Centre of Mass MCQ Question
A trolley of mass 300 kg carrying a sandbag of 25 kg is moving uniformly with a speed of 27 km/h on a frictionless track. If sand starts leaking out of the trolley at a rate of 0.05 kg/s, what is the new speed of the trolley after all the sand has leaked out?
27 km/h
30 km/h
24 km/h
0 km/h
Correct Answer
Detailed Explanation
Since the track is frictionless, the horizontal motion of the trolley is not affected by the leaking sand. Thus, the speed of the trolley remains constant at 27 km/h.
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