177_Dynamics 11ed Manual

177_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 13 g 32.2 ft s 2 = Solution: Guesses F A 1lb = F max = a A 1 ft s 2 = a B 1 ft s 2 = a () FF a = First assume no slip Given A W A g a A = F A W B g a B = a A a B = F max μ s W A = F A F max a A a B Find F A F max , a A , a B , = If F A 3.599 lb = < F max 8lb = then our assumption is correct and a A a B 3.86 3.86 ft s 2 = b b = First assume no slip Given A W A g a A = F A W B g a B = a A a B = F max s W A = F A F max a A a B Find F A F max , a A , a B , = Since F A 30lb = > F max = then our assumption is not correct.
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