Question

# $$Figure$$ 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 $${ a }_{ 1 }$$ and $${ a }_{ 2 }$$, respectively, then

A
a1=a2cosθ
B
a2=a1cosθ
C
a1=a2
D
None of these

Solution

## The correct option is C None of theseLet the velocity of A be $$v_1$$ and velocity of B be $$v_2$$since velocity at every point of string must be equal $$v_1=v_2\cos \theta$$   ...........(1)Differentiating equation (1) we get $$a_1=a_2\cos \theta$$Physics

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