Representation of data — practice question

Particle $P$, with mass $0.2\,\text{kg}$, is tied to one end of a light inextensible string of length $0.6\,\text{m}$. Its other end is connected to particle $Q$, which has mass $0.3\,\text{kg}$. The string goes through a tiny hole $H$ in a smooth horizontal plane. Particle $Q$ is linked to fixed point $A$ by a light elastic string with natural length $0.3\,\text{m}$ and modulus of elasticity $15\,\text{N}$, where $A$ lies $0.4\,\text{m}$ vertically beneath $H$. Particle $P$ travels across the surface in a horizontal circle centred at $H$ (see diagram).