Answer: A skier weighing 600 N goes over a frictionless
Chapter , Problem 74(choose chapter or problem)
A skier weighing 600 N goes over a frictionless circular hill of radius R = 20 m (Fig. 8-60). Assume B A /' .~. \~ / ~ \ I Vi I R \ I I I I I II Fig.8-60 74. that the effects of air resistance on the skier are negligible. As she comes up the hill, her speed is 8.0 mls at point B, at angle (J = 20. (a) What is her speed at the hilltop (point A) if she coasts without using her poles? (b) What minimum speed can she have at Band still coast to the hilltop? ( c) Do the answers to these two questions increase, decrease, or remain the same if the skier weighs 700 N instead of 600 N?
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