Question: Need solution . A 2-lb block rests on the smooth semicylindrical surface. An elastic cord having a stiffness k = 2 lb/ft is attached to

Need solution

. A 2-lb block rests on the smooth semicylindrical surface. An elastic cord having a stiffness k = 2 lb/ft is attached to the block at B and to the base of the semicylinder at point C. If the block is released from rest at A (8 = 0), determine the unstretched length of the cord so that the block begins to leave the semicylinder at the instant 6 = 45. Neglect the size of the block

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