+1 vote
in Fluid Mechanics by (118k points)
Which among the following is a formula for force when it acts perpendicular to the direction of flow?

(a) pav^2 SinθCosθ

(b) pav Sin^2θ

(c) pa Sin^2θ

(d) maE Sin^2θ

This question was addressed to me in an interview for job.

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

1 Answer

+2 votes
by (362k points)
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Best answer
Correct option is (a) pav^2 SinθCosθ

The best explanation: When a force can be resolved into two components, one in the direction of the jet and the other perpendicular to the jet. The formula for force when it acts perpendicular to the direction of flow is equal to pav^2 SinθCosθ.

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