578_Dynamics 11ed Manual

578_Dynamics 11ed Manual - the truck bed are s and k ,...

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Engineering Mechanics - Dynamics Chapter 17 Guesses a G 1 ft s 2 = α 1 rad s 2 = Given a G a At r = 0 W g a G r W g k G 2 + = a G Find a G , () = a G 0.923 ft s 2 = 0.692 rad s 2 = Problem 17-98 The truck carries the spool which has weight W and radius of gyration k G . Determine the angular acceleration of the spool if it is not tied down on the truck and the truck begins to accelerate at the rate a At . The coefficients of static and kinetic friction between the spool and
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Unformatted text preview: the truck bed are s and k , respectively. Given: W 200 lb = g 32.2 ft s 2 = k G 2 ft = s 0.15 = a At 5 ft s 2 = k 0.1 = r 3 ft = Solution: Assume no slip Guesses F 1 lb = F N 1 lb = F max 1 lb = a G 1 ft s 2 = 1 rad s 2 = Given F W g a G = F r W g k G 2 = F N W = F max s F N = a G a At r = 576 Solution:...
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