JEE Main 2022 Physics question
A pressure-pump has a horizontal tube of cross sectional area 10 for the outflow of water at a speed of 20 m/s. The force exerted on the vertical wall just in front of the tube which stops water horizontally flowing out of the tube, is [given: density of water = 1000 ]
Answer: (4)
Solution
The force equals the rate of change of momentum of the water stopped by the wall:
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