Engineering Mechanics - DynamicsChapter 14Given12Wg⎛⎝⎞⎠v2μkNd dmax+()−12kdmax2−Wd dmax+aa2b2+⎛⎜⎝⎞⎟⎠+0=dmaxFinddmax=dmax2.56 ft=Problem 14-18The collar has mass Mand rests on the smooth rod. Two springs are attached to it and the ends of therod as shown. Each spring has an uncompressed length l. If the collar is displaced a distance s = s'and released from rest, determine its velocity at the instant it returns to the point s = 0.Given:M20 kg=k50Nm=s'0.5 m=k'100Nm=l1m=d0.25 m=Solution:12ks'212k' s'2+12Mvc2=vckk'+Ms'⋅=
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