154_Dynamics 11ed Manual

154_Dynamics 11ed Manual - the wind, which is proportional...

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Engineering Mechanics - Dynamics Chapter 13 Given: W 800 lb = F r1 30 lb = F r2 80 lb = s 2 5f t = a 100 ft = b 100 ft = g 32.2 ft s 2 = Solution: θ atan b a = On the incline W θ () F r1 W g a 1 = a 1 g W θ () F r1 W = a 1 21.561 ft s 2 = v 1 2 2 a 1 a 2 b 2 + = v 1 2 a 1 a 2 b 2 + = v 1 78.093 ft s = In the water F r2 W g a 2 = a 2 gF r2 W = a 2 3.22 ft s 2 = v 2 2 2 v 1 2 2 a 2 s 2 = v 2 v 1 2 2 a 2 s 2 = v 2 77.886 ft s = *Problem 13-12 A car of mass m is traveling at a slow velocity v 0
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Unformatted text preview: the wind, which is proportional to its velocity, i.e., F D = kv determine the distance and the time the car will travel before its velocity becomes 0.5 v . Assume no other frictional forces act on the car. Solution: F D ma = k v ma = 152...
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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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