Question

Air flows into the atmosphere from a nozzle and strikes a vertical plate as shown in below figure. The reading on the pressure gage was 1.82 kPa. Determine the horizontal force required to hold the plate in place. Assume the flow to be incompressible and frictionless. Also consider the density of air is 1.23 kg/m3 and neglect the air weight.

P= 1.82 kPa F = ?? N A=0.003 m A = 0,01 m²

Answer 1

Jelouty of flow @ entrance of pipe V = √ 2 gH xC V, - Jax 9-81X150 83 x 0.95 [het, Co=0.95] V, 251.68 mloc. According to law of Conservation of mass, AV, ZA₂V₂ 2) 0:01x51.68 = 0.093 X V2 Vg = 172.26 mlo :. Velocity at nozzle, 1₂ = 172.26 m/s. force required to hold the plate a force exerted by jet on the plate force exerted by the get on the plate fa = pater 3 l. 23x0.003 x 172.262 x = 109.5 N the plate is 109.5 N .. The force required to hold