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33. In the arrangement shown in figure, it block A comesdown with speed v m/s then speed of P and Cblocks at this instant ismorm(1) v sine(2) v cose(3)vtanecose

Answer»

Let the speed of mass M be v .The point on thread just connected to mass M will also have the same velocity .The component of the v along the thread is v cos θ . That means any point on the thread must be moving with speed v cos θ .As it is given that thread is moving with velocity u .That meansv cos θ = u=>v= u/ cos θ

option (4) is correct.



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