# A liquid of density ρ is coming out of a hose pipe of radius a with horizontal speed v and hits a mesh. 50% of the liquid passes through the mesh unaffected. 25% looses all of its momentum and 25% comes back with the same speed. The resultant pressure on the mesh will be: (a)  v2 (b) (c) (d)

## Question ID - 50291 :- A liquid of density ρ is coming out of a hose pipe of radius a with horizontal speed v and hits a mesh. 50% of the liquid passes through the mesh unaffected. 25% looses all of its momentum and 25% comes back with the same speed. The resultant pressure on the mesh will be: (a)  v2 (b) (c) (d)

3537

Answer Key : (b) -

Momentum per second carried by liquid per second is av2

net force due to reflected liquid=2×

net force due to stopped liquid=a

Total force=

Net pressure=

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