Representation of data — practice question

The cone is a uniform solid cone with height $20\ \text{cm}$ and base radius $4\ \text{cm}$. $PQ$ is a diameter of the cone’s base. The cone is in equilibrium, with $P$ resting on a horizontal surface and $PQ$ vertical, while a force is applied at $Q$. This force has magnitude $3\ \text{N}$ and acts parallel to the axis of the cone (see diagram).