Questions
A block of metal weighing 2kgis resting on a frictionless plane. It is struck by a jet releasing water at a rate of 1 kgs-1 and at a speed of 5 ms-1. The initial acceleration of the block is
detailed solution
Correct option is D
Force on block =vdmdt Acceleration of block =FM=vMdmdt=52×1=52m/s2Talk to our academic expert!
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A train is moving with velocity 20 m/sec. on this dust is falling at the rate of 50 kg/minute. The extra force required to move this train with constant velocity will be
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