Show that with the proper stiffness k of the spring

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The cross section of a trap door hinged at A and having a mass m and a center of mass at G is shown in the figure. The spring is compressed by the rod which is pinned to the lower end of the door and which passes through the swivel block at B. When () = 0, the spring is undeformed. Show that with the proper stiffness k of the spring, the door will be in equilibrium for any angle ().

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Reference no: EM13933239

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