# Equilibrium of JEE!

**Classical Mechanics**Level 5

A straight metal rod of length \(3L\) is bent through the right angle as shown. The bent rod is then placed on a

**rough horizontal table**. A light string is attached to the vertex of the right angle. The string is then pulled horizontally so that rod slides at a constant velocity \(v\) .Find the angle \(\alpha \) (in **degrees**) that the side \(2L\) would make with the string.

**Details and Assumptions**

- Mass density of rod: \(\rho_r= 10\text{ kg/m}\),
- Length: \(L = 10\text{ m}\),
- Velocity: \(v= 10 \text{ m/s}\).