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(Solved): In a skating stunt known as "crack-the-whip," a number of skaters hold hands and form a straight li ...
In a skating stunt known as "crack-the-whip," a number of skaters hold hands and form a straight line. They try to skate so that the line rotates about the skater at one end, who acts as the pivot. The skater farthest out has a mass of \( 78.0 \mathrm{~kg} \) and is \( 6.90 \mathrm{~m} \) from the pivot. He is skating at a speed of \( 7.20 \mathrm{~m} / \mathrm{s} \). Determine the magnitude of the centripetal force that acts on him.