Question

A stream of water strikes a stationary turbine. The incident stream of water has a velocity of 18m/s, while the exiting water stream has a velocity of -18m/s. the mass of the water per second that strikes the blade is 25kg/s. find the magnitude of the average force exerted by the water on the blade

Answer 1

force*time=mass*changeVelcoity
force=mass/time * changeVelociy=25kg/sec * 36 m/s-= 25*36 N