Engineering Mechanics - DynamicsChapter 14Problem 14-77The collar of weight Wis released from rest at Aand travels along the smooth guide. Determineits speed when its center reaches point Cand the normal force it exerts on the rod at this point.The spring has an unstretched length L, and point Cis located just before the end of the curvedportion of the rod.Given:W5lb=L12 in=h10 in=k2lbin=g32.2fts2=Solution:TAVA+TCVC+=0WL+12kh2+12Wg⎛⎝⎞⎠vC212kL2h2+L−()2+=vC2gLkgW⎛⎝⎞⎠h2+W⎛⎝⎞⎠L2h2+L−2−=vC12.556fts=NC2h2+L−LL2h2+⎛⎜⎝⎞⎟⎠+WgvC2L⎛⎜⎝⎞⎟⎠=NCWgvC2L⎛⎜⎝⎞⎟⎠L2h2+⎛⎜⎝⎞⎟⎠L2h2+L−−=NC18.919 lb=Problem 14-78The firing mechanism of a pinball machine consists of a plunger
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