On a Planet Where G = 10

question 108

Multiple Choice

On a planet where g = 10.0 m/s² and air resistance is negligible, a sled is at rest on a rough inclined hill rising at 30° as shown in the figure. The object is allowed to move and it stops on a rough horizontal surface, at a distance of 4.0 m from the bottom of the hill. The coefficient of kinetic friction on the hill is 0.40. What is the coefficient of kinetic friction between the horizontal surface and the sled?

• A)0.10
• B)0.20
• C)0.31
• D)0.40
• E)0.60

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