The 5 kg skateboard rolls down the 5 degree slope at a constant speed. If the coefficient of kinetic friction between the 12.5 mm diameter axles and the wheels is mu_k = .3, determine the radius of the wheels. neglect rolling resistance of the wheels on the surface. The center of mass is located at G. There is a picture but I can't post it. The info given: G is 250 mm to the right of the downhill wheel and 300 mm to the left of the uphill wheel and 75 mm above the surface but not in line with the board itself.