Water from a hosepipe of radius 5 cm strikes a wall at a speed of 5 m s - 1 normally and stops. The force exerted on the wall in newton is

Step-by-step solution

Given, Radius of hose pipe r = 5  cm = 5 × 10 - 2  m Speed of water v = 5  m  s - 1 We know that, F = A v 2 ρ F = π r 2 v 2 ρ F = π 5 × 10 - 2 2 5 2 × 1000 F = 62.5 π N