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Q.

AB is stationary curved surface blade. A stream line water impinges on the curved surface. The speed of stream line water is 'u' , both before and after it strikes the curved surface of the blade. The mass flow rate of water per unit time is 'u'. Find the force exerted by water on the blade in Newton (Given u = 2.2 m/s, μ =200 gm/sec)

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answer is 0.88.

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Detailed Solution

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F=dpdt=ΔPΔt=Δu.(mt)=(2×2.2)×2001000= 0.88 Newton

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AB is stationary curved surface blade. A stream line water impinges on the curved surface. The speed of stream line water is 'u' , both before and after it strikes the curved surface of the blade. The mass flow rate of water per unit time is 'u'. Find the force exerted by water on the blade in Newton (Given u = 2.2 m/s, μ =200 gm/sec)