In downhill speed sking a skier is retarded by both the air drag force on the body
Question:
In downhill speed sking a skier is retarded by both the air drag force on the body and the kinetic frictional force on the skis. (a) Suppose the slope angle is θ = 40.0o, the snow is dry snow with a coefficient of kinetic friction µk = 0.0400, the mass of the skier and equipment is m = 85.0 kg, the cross-sectional area of the (tucked) skier is, 4 = 1.30 m2, the drag coefficient is C = 0.150, and the at density is 1.20 kg/m3.
(a) What is the terminal speed?
(b) If a skier can vary C by a slight amount dC by adjusting, say, the hand positions, what is the corresponding variation in the terminal speed?
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This problem involves Newtons second law for motion along the slope a The force ...View the full answer
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Related Book For 
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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