Rigid Body Equilibrium

2025 1 question

1. A uniform rod of mass $20\text{ kg}$ and length $5\text{ m}$ leans against a smooth vertical wall making an angle of $60^\circ$ with it. The other end rests on a rough horizontal floor. The friction force that the floor exerts on the rod is (take $g = 10\text{ m/s}^2$):