In the arrangement shown in the figure, friction exists only between the two blocks, A and B. The coefficient of static friction `mu_(s)=0.6` and coefficient of kinetic friction `mu_(k)=0.4`, the masses of the blocks A and B are `m_(1)=20 kg` and `m_(2)=30kg`, respectively. Find the acceleration (in `ms^(-2)`) of `m_(1)`, if a force `F=150N` is applied, as shown in the figure. [Assume that string and pulleys are massless]

Answer

1.5