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posted by  CaptainAmerica. on 11/3/2009 2:53:16 PM  |  status: Closed  |  Earned Karma: 209

Life saver!! Please Help

Course Textbook Chapter Problem Needs by
Fluid Mechanics Engineering Fluid Mechanics (9th) by Crowe, Elger, Williams 6 90P 11/4/2009 at 12:00:00 PM
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I need a detailed answer to this question! Please help! The title of the chapter is momentum equations, and I am quite far off from the answer in the back of the book which is vmax = 15.2 m/s. Here is the question: Thank you very much for your time!!

A very popular toy on the market several years ago was the water rocket. Water (at 10 degrees C) was loaded into a plastic rocket and pressurized with a hand pump. The rocket was released and would travel a considerable distance in the air. Assum that a water roket has a mass of 50g and is charged with 100g of water. The pressure inside the rocket is 100kPa gage. The exit area is one-tenth of the chamber cross-sectional area. The inside diameter of the rocket is 5cm. Assume that bernoulli's equation is valid for the water flow inside the rocket. Neglecting air friciton, calculate the maximum velocity it will attain.

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(SME)
posted by jacey on 11/5/2009 1:54:15 AM  |  status: Live
Asker's Rating: Lifesaver   
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