Question

ans. this immediately​

Answer 1

Answer: Option 3  

(m +M' +M)/2

Explanation:

as we can see in the image there is pulley system consisting of a fixed and and movable pulley

M.A =2^n (where n represents no of movable pulleys)

TOTAL MASS

(m+M'+M)

therefore Ma =L/E

MA is given to be two

2 = m +M'+M/E

E =m+M'+M/2