Question
Download Solution PDFThe force exerted by a jet of water on a stationary vertical plate in the direction of the jet is ________.
where, ρ = mass density of the liquid, a = cross-sectional area of the jet, V = velocity of the jet.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Jet Striking a stationary vertical plate:
From Newton’s second law
F = dp/dt; where; p = momentum = mv
∴
∴
∴
∴
Now
Mass = ρ × volume ; volume = area × length
∴ [mass (m)]/time = [ρ × area × length]/time ∵ length/time = velocity
∴
Substitute equation (2) in equation (1)
∴ F = ρ × a × v2
Note: Jet Striking a Stationary incline plate
Let us apply the impulse-momentum equation in the direction normal to the plate
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