ch14-p053 - 53. Suppose that a mass m of water is pumped in...

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53. Suppose that a mass Δ m of water is pumped in time Δ t . The pump increases the potential energy of the water by Δ mgh , where h is the vertical distance through which it is lifted, and increases its kinetic energy by 2 1 2 mv Δ , where v is its final speed. The work it does is 2 1 2 Wm g h m v Δ= Δ +Δ and its power is 2 1 . 2 Pg h v tt ΔΔ §· == + ¨¸ ©¹ Now the rate of mass flow is Δ m / Δ t = ρ w Av , where
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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