A 4-lb ballÿBÿis traveling around in a circle of radiusÿr1 = 3 ftwith a speed (vB)1 = 5.6ft/s . The attached cord is pulled down through the hole with a constant speedÿvr = 1.6ft/s . Part A Determine the ball?s speed at the instantÿr2 = 2 ft.
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