On a Planet Where G = 10

question 206

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