# Over The Top!

**Classical Mechanics**Level 5

The grenade is a point mass that is thrown with a variable velocity \(u\), at a variable angle \(\theta\). The barrier is a cylinder with a radius of \(R= 2m\).

Find the **minimum** value of \(u\) (in meters) for which the particle crosses the log.

**Details and assumptions**

Neglect air resistance and viscosity.

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