Questions  

Figure shows two blocks, each of mass m. The system is released from rest. If accelerations of blocks 

A and B at any instant (not initially) are a1 and a2, respectively, then 

.

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a
a1=a2cos⁡θ
b
a2=a1cos⁡θ
c
a1=a2
d
None of these
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detailed solution

Correct option is D

Let at any time, their velocities are v1 and v2, respectively.Then v1=v2cos⁡θDifferentiating: a1=a2cos⁡θ−v2sin⁡θdθdtHence, none of them is correct.[Note: Option (a) is correct initially, because initially v2=0]

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Similar Questions

In the arrangement shown in the figure at a particular instant, the roller is coming down with a speed of 12 m s-1 and C is moving up with 4 ms-1. At the same instant, it is also known that w.r.t. pulley P, blockr4 is moving down with speed 3 ms-1. Determine the motion of block B (velocity) w.r.t. ground. 

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