Question

16.) If acceleration of block m, is a downward then
acceleration of block my will be
M
M2
(1) 2a upward
(2) a upward
a
(3)
upward
2
(4) 2a downward​

Answer 1

Answer:

When the block m2​ moves downward acceleration a, the  acceleration of mass m be 2a, because it covers double distance at same time in comparison to m2​

Let T is the tension in the string

From the free body diagram of A and B we get

T=m1​2a...............(1)

m2​g−2T=m2​a...............(2)

From Eqs.(i) and (ii) we get

a=(4m1​+m2​)m2​g​

solution

Explanation:

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