GATE ME 2014 Set 1 — Question 44
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Fluid Mechanics → Fluid Kinematics & Dynamics → Impulse-Momentum Principle
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Question
An ideal water jet with volume flow rate of strikes a flat plate placed normal to its path and exerts a force of . Considering the density of water as , the diameter (in mm) of the water jet is _______
Correct answer
56 to 57
Solution
The force exerted by a jet on a stationary flat plate normal to it is given by:Since volume flow rate , we can write:Given:
Substituting the values:The area of the jet is :The diameter of the water jet is approximately .
Substituting the values:The area of the jet is :The diameter of the water jet is approximately .
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