A 300 kg trolley carrying a 25 kg sandbag i | vedclass

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(D) The system consists of the trolley and the sandbag. Since the track is frictionless,there is no external horizontal force acting on the system.Acc

Vedclass · Accepted Answer

$27$

Vedclass · Answer

(D) The system consists of the trolley and the sandbag. Since the track is frictionless,there is no external horizontal force acting on the system.According to the law of conservation of linear momentum,the total momentum of the system remains constant.Since the sand is falling inside the trolley,the mass of the system (trolley + sandbag + sand) remains constant as a whole.Because there is no external force and the total mass of the system moving at the initial velocity remains constant,the velocity of the trolley does not change.Therefore,the speed of the trolley remains $27 \ km/hr$.

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