Cool mechanics problem

Classical Mechanics Level 2

A stream of particles each of mass m moving with velocity v with number of particles per unit volume n strike against a wall at an ∠ θ \angle \theta to the normal elastically. Find the pressure exerted by the stream on the wall.

2 m n v 2 cos ⁡ 2 θ 2mnv^{2}\cos^{2} \theta m n v 2 cos ⁡ 2 θ mnv^{2}\cos^{2} \theta m n v 2 sin ⁡ 2 θ mnv^{2}\sin^{2} \theta mnv

Harsh Poddar by harsh poddar , 22, India

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