Please solve it 

28. If pulleys shown in the diagram are smooth and massless and a 1 and a2 are acceleration of blocks of mass 4 kg  and 8 kg respectively, then 

(a) a1 = a2
(b) a1 = 2a2
(c) 2a​1 = a2
(d) a1 = 4a2

Dear student,

Acceleration of the block of 4kg is aand 8kg is a
a=mgM+ma1=4g8+4=4g12=g3   eqn1a2=8g12=2g3   eqn 2Equating 1 and 22a1 =a2


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