AIPMT MAINS 2008 Physics Newton's Laws of Motion MCQ Question
Sand is being dropped on a conveyor belt at the rate of M kg/s. The force necessary to keep the belt moving with a constant velocity of v m/s will be
Zero
Mv newton
2 Mv newton
Mv/2 newton
Correct Answer
Detailed Explanation
The force required is given by the rate of change of momentum, which is Mv newton, as the mass flow rate is M kg/s and velocity is v m/s.
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