n a skating stunt known as crack-the-whip, a number of skaters hold hands and fo

Question

n 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 80.0 kg and is 5.35 m from the pivot. He is skating at a speed of 6.85 m/s. Determine the magnitude of the centripetal force that acts on him.

Please explain answer and formula      
n 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 80.0 kg and is 5.35 m from the pivot. He is skating at a speed of 6.85 m/s. Determine the magnitude of the centripetal force that acts on him.

Please explain answer and formula      

Explanation / Answer

Given that mass of the skater is m = 80.0 kg            speed of the skater is v = 6.85 m/s        distance from the pivot is r = 5.35 m magnitude of the centripetal force is F = m v^2 / r                                                                = 80.0 * ( 6.85 m/s )^2 / 5.35 m                                                                 = 701 N

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