Newton's laws of motion — practice question

Particles $A$ and $B$, with masses $0.2\,\text{kg}$ and $0.3\,\text{kg}$ respectively, are attached to the two ends of a light inextensible string. That string runs over a small fixed smooth pulley fixed to the lower end of a rough plane inclined at an angle $\theta$ to the horizontal, where $\sin\theta = 0.6$. Particle $A$ is on the plane, while particle $B$ hangs vertically below the pulley and is $0.25\,\text{m}$ above horizontal ground. The part of the string from $A$ to the pulley is parallel to a line of greatest slope of the plane (see diagram). The coefficient of friction between $A$ and the plane is $1.125$. Particle $A$ is released from rest.