Question

Force exerted by a jet on a stationery plate happens in how many cases?

(a) 3 cases

(b) 2 cases

(c) 1 case

(d) Nil

The question was posed to me in an interview for job.

This intriguing question originated from Force Exerted by a Jet on a Stationary Flat Inclined Plate in portion Impact of Jets and Jet Propulsion of Fluid Mechanics

Answer 1

Right option is (a) 3 cases

The explanation is: Force exerted by a jet on a stationery plate happens in three cases. The three cases are classified depending on their position. The three cases are when plate is vertical, plate is inclined and plate is curved with respect to the jet.