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Q.

In Fig., blocks A and B move with velocities v1 and v2along horizontal direction. Find the ratio of v1/v2.

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a

sinθ1sinθ2

b

sinθ2sinθ1

c

cosθ2cosθ1

d

cosθ1cosθ2

answer is C.

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Detailed Solution

dl1dt+dl2dt=0. −v1cosθ1+ v2cosθ2= 0⇒v1v2=cosθ2cosθ1.
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