NDA 2023 Physics question

Physics Laws of Motion NDA 2023

Sand falls vertically on a conveyor belt at a rate of 0·1 kg/s. In order to keep the belt moving at a uniform speed of 2 m/s, the force required to be applied on the belt is :

(A)0 N
(B)0·2 NCorrect
(C)1·0 N
(D)2·0 N

Answer: (B)

Solution

Every second, 0.1 kg of sand must be given a horizontal velocity of 2 m/s. Force

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Question ID VK-032413