ME+70+Final+Exam+2008

ME+70+Final+Exam+2008 - ME 70 Final Exam June 9, 2008 This...

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ME 70 Final Exam June 9, 2008 This is an open textbook only test. Supplemental notes can augment the text, but they must be inserted and firmly attached to the textbook. Some useful numbers: ρ air = 1.23 kg/m 3 ρ water = 10 3 kg/m 3 μ air = 1.8 x 10 -5 Ns/m 2 μ water = 10 -3 Ns/m 2 ν air = 1.5 x 10 -5 m 2 /s ν water = 10 -6 m 2 /s 1. (20 Points) The structure of a quarter segment of a cylinder in cross section shown is hinged at P and acts as a dam for the reservoir. The cylinder has a length w into the page. When filled to a height R equal to the radius of the cylinder, the structure is in static equilibrium. (a) Determine an expression (in terms of variables in the problem) for the net hydrostatic forces in the horizontal and vertical directions. (b) Determine the line(s) of action for these forces ( x’ and z’ (or h’ ). (c) Determine an expression for the specific gravity of the structure, SG= γ / γ water 2. (20 Points) The USTA has hired you to measure the drag coefficient of their new tennis balls of diameter
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This note was uploaded on 08/01/2009 for the course ME 70 taught by Professor Cappelli,m during the Winter '08 term at Stanford.

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ME+70+Final+Exam+2008 - ME 70 Final Exam June 9, 2008 This...

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