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Fluid Mechanics

Force Exerted by the Jet on a Moving Plate-I

Consider the ...

Question

Consider the following assumptions made in the analysis of a jet impinging normally on a moving plate to introduce the principle of moment of momentum:
1. Friction between jet and plate is neglected.
2. Flow is steady.
3. Impinging momentum of jet is unchanged.
4. Plate moves at a constant velocity.
Which of these statements are relevant?

1, 2 and 4 only

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1, 2 and 3 only

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2, 3 and 4 only

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1, 2, 3 and 4

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Solution

The correct option is A 1, 2 and 4 only
After the jet impinges normally on moving plate the direction of velocity changes. Hence the direction of momentum changes.

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The correct option is A 1, 2 and 4 onlyAfter the jet impinges normally on moving plate the direction of velocity changes. Hence the direction of momentum changes.

The correct option is A 1, 2 and 4 only
After the jet impinges normally on moving plate the direction of velocity changes. Hence the direction of momentum changes.