A 65-kg water skier is being accelerated by a ski boat on a flat (\"glassy\") la

Question

A 65-kg water skier is being accelerated by a ski boat on a flat ("glassy") lake. The coefficient of kinetic friction between the skier's skis and the water surface is ?k = 0.25

Part A

What is the skier's acceleration if the rope pulling the skier behind the boat applies a horizontal tension force of magnitude FT = 270N to the skier (? = 0?)?

Express your answer to two significant figures and include the appropriate units.

Part B

What is the skier's horizontal acceleration if the rope pulling the skier exerts a force of FT = 270N on the skier at an upward angle ? = 12??

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

F = mass * acc

270 = 65 * a

a = 4.15 m / s^2

if it is at 11 deg, the component along the skier is 270N * cos 12 deg = 264 N

a = 264 / 65 = 4.061 m/ s^2

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