A two-member truss $PQR$ is supporting a load $W$. The axial forces in members $PQ$ and $QR$ are respectively

1. $2W$ tensile and $\sqrt{3}W$ compressive
2. $\sqrt{3}W$ tensile and $2W$ compressive
3. $\sqrt{3}W$ compressive and $2W$ tensile
4. $2W$ compressive and $\sqrt{3}W$ tensile