NEET Physics Centre of Mass MCQ Question
A trolley of mass 300 kg carries a sandbag of 25 kg and moves uniformly with a speed of 27 km/h on a frictionless track. If sand leaks from the trolley at a rate of 0.05 kg/s, what will be the velocity of the trolley after 100 seconds?
27 km/h
30 km/h
24 km/h
33 km/h
Correct Answer
Detailed Explanation
Since the system is isolated and there are no external forces, the center of mass velocity remains constant. Hence, the speed of the trolley remains at 27 km/h even after sand leakage.
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