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The 2.2-lb collar has a speed of 2 ft/s at A. The attached spring has an unstretched length of 2 ft and a stiffness of k = 10 lb/ft. The collar moves over the smooth rod. (Figure 1)
Part A
Determine collar's speed when it reaches point B.
Express your answer to three significant figures and include the appropriate units.
Part B
Determine the normal force of the rod on the collar at B.
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