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Gabriel the Grenadier wants to lob a grenade over a huge barrier in front of him. He models the scenario in the following way:

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

Find the minimum value of uu (in m/s) for which the particle crosses the log.

Details and assumptions

Neglect air resistance and viscosity.
Take g=9.8m/s2g=9.8 m/s^2.

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