67_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 12 Determine the smallest angle θ , measured above the horizontal, that the hose should be directed so that the water stream strikes the bottom of the wall at B. The speed of the water at the nozzle is v C . Given: v C 48 ft s = h 1 3f t = d 30 ft = g 32.2 ft s 2 = Solution: a x 0 = a y g = v x v C cos () = v y g tv C sin + = s x v C cos t = s y g 2 t 2 v C sin t + h 1 + = When it reaches the wall dv C cos t = t d v C cos = 0 g 2 d v C cos 2 v C sin d v C cos + h 1 + = d 2cos 2 sin 2 dg v C 2 h 1 + = Guess 10 deg = Given 0 d 2 sin 2 v C 2 h 1 + = Find = 6.406 deg = Problem 12–85
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This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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