5.28 A stream of water flowing horizontally with a speed of 15 m s-1 gushes out of a tube of cross-sectional area 10-2 m2, and hits a vertical wall nearby. What is the force exerted on the wall by the impact of water, assuming it does not rebound ?

Speed of water, v = 15 m/sCross-sectional area of the tube, A = 10-2 m2Density of water ρ = 1000 kg/m3Mass of the water hitting the wall = ρ×A×v = 1000 × 10-2 ×15 = 150 kg/sForce exerted on the wall because of impact of water = mass × velocity = 150 ×15 N = 2250 N

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5.28 A stream of water flowing horizontally with a speed of 15 m s^-1 gushes out of a tube of cross-sectional area 10^-2 m², and hits a vertical wall nearby. What is the force exerted on the wall by the impact of water, assuming it does not rebound ?

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Vishal Baghel | Contributor-Level 10

4 months ago

Speed of water, v = 15 m/s

Cross-sectional area of the tube, A = 10^-2 m²

Density of water $ρ$ = 1000 kg/m3

Mass of the water hitting the wall = $ρ \times A \times v$ = 1000 $\times$ 10^-2 $\times 15$ = 150 kg/s

Force exerted on the wall because of impact of water = mass $\times$ velocity = 150 $\times 15$ N = 2250 N

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