Find the acceleration of the `A` and `B` in the situation show in the figure

Explanation

`2T - 50 = 5a` …(i)
`40 - T = 4 (2a)` …(ii)
On solving these equations, we get

`a = (10)/(7) m//s^(2)` or `(g)/(7)`
and `2a = (20)/(7) m//s^(2)` or `(2g)/(7)`