532_Dynamics 11ed Manual

# 532_Dynamics 11ed Manual - μ s and k respectively Given a...

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Engineering Mechanics - Dynamics Chapter 17 Solution: Require N c to act at corner B for tipping. Pd mg b 2 ma G h 2 = Pm a G = Pd m g b 2 P h 2 = P max mgb 2 d h 2 = *Problem 17-40 The car accelerates uniformly from rest to speed v in time t . If it has weight W and a center of gravity at G , determine the normal reaction of each wheel on the pavement during the motion. Power is developed at the front wheels, whereas the rear wheels are free to roll. Neglect the mass of the wheels and take the coefficients of static and kinetic friction to be
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Unformatted text preview: μ s and k respectively. Given: a 2.5 ft = v 88 ft s = k 0.2 = t 15 s = b 4 ft = W 3800 lb = c 3 ft = s 0.4 = g 32.2 ft s 2 = Solution: Assume no slipping a G v t = a G 5.867 ft s 2 = Guesses N B 1 lb = N A 1 lb = F A 1 lb = Given 2 N B 2 N A + W − = 2 F A W g ⎛ ⎝ ⎞ ⎠ a G = 2 − N B b c + ( ) W c + W − g ⎛ ⎝ ⎞ ⎠ a G a = 530...
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