831_Dynamics 11ed Manual

831_Dynamics 11ed Manual - Engineering Mechanics Dynamics...

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Engineering Mechanics - Dynamics Chapter 22 To find critical damping ω n K M = C 2 M n = c C b 2 = c 3.92 lb s ft = Problem 22-61 A block having mass M is suspended from a spring that has stiffness k . If the block is given an upward velocity v from its equilibrium position at t = 0, determine its position as a function of time. Assume that positive displacement of the block is downward and that motion takes place in a medium which furnishes a damping force F = C |v| . Given: M 7kg = k 600 N m = C 50 Ns m =
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