A 160 lb person is being pulled on a tube in the snow by a four wheeler when the four wheeler starts to spin at 3 rad/s. Initially, the person on the tube is 12 feet from the center of rotation when the towing rope gets wrapped around the axle and begins to pull in at 3 ft/s. Determine the velocity of the person and the tube when they are 4 feet from the center of rotation. Neglect the mass of the four wheeler, tube, and towing rope. Assume the tube is on a smooth surface and that angular momentum is conserved. (108.0 ft/s)
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Ответ:
5.64 m
The longest straight line i.e. chord that can be drawn in a circle is its along the diameter.
we know area of a circle is given by:
Hence, the swimmer can swim the longest distance of d = 5.64 m in the pool.