# Challenges in mechanics by Ronak Agarwal (Part 1)

**Classical Mechanics**Level 5

Now when the line joining the centre of the 2 spheres makes an angle \(\theta \) with the vertical the upper sphere loses contact with lower sphere. Then find \(\left\lfloor \theta \right\rfloor \) in degrees.

Details and assumptions:

1)There is no friciton between the two spheres.

2)Take \(g={ 9.8\quad m/s }^{ 2 }.\)