210_Dynamics 11ed Manual

210_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 13 Given: W 0.75 lb = δ 1 0.4 ft = r 0.2 ft = θ 1 45 deg = a 0.1 ft = k 12 lb ft = ' 6 rad s = g 9.81 m s 2 = Solution: θθ 1 = za ( )sin 2 () = z' 2 a ( ) cos 2 ' = z'' 4 a ( ) sin 2 ' 2 = F a k 1 W g z'' = F a k 1 W g z'' + = F a 4.464 lb = Problem 13-86 The spring-held follower AB has weight W and moves back and forth as its end rolls on the contoured surface of the cam, where the radius is r and z = a sin(2 ). If the cam is rotating at a constant rate of ' , determine the maximum and minimum force the follower exerts on the cam
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