At the instant r = 1.5 m, the 5-kg disk is given a speed of v = 5m/s, perpendicular to the elastic cord.Determine the speedof the disk and the rate ofshortening of the elastic cord at theinstant r = 1.2 m.The disk slides on the smooth horizontalplane.Neglect is size.The cord has anunstretchedlength of 0.5 m and a spring constant of k = 200 N/m.
I am confused about where to go in order to findthe rate of shortening.Any help would be greatlyappreciated.All steps would be helpfulto insure that whatI've done so far is correct.
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