acceleration of A=2a
& dat of B =a
.....so applying newtons 2nd law...
on B in y- direction......we get...
5g-2T =5a...........1.......since...B is cuming downwards...
on A in x direction....
T =2*2a
=4a...
so substituing T =4a...in ..1
we get....
5g - 8a =5a...
thus....a = 5g/13..
...........
thus ...for A ..acc...is 10g/13..
& for B ,...is....5g/13..
hope u r clear....