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Questions  

If the blocks are moving as shown in the figure the relation between a1 , a2 and a3 will be  

a
2a1+2a2+a3=0
b
2a1−2a2+a3=0
c
2a1−2a2−a3=0
d
2a2−2a1+a3=0

detailed solution

Correct option is D

From pulley (3)a2=2a1−a322a2=2a1−a32a2−2a1+a3=0

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