As a logging truck rounds a bend in the road, some logs come loose and begin to roll without slipping down the mountainside. the mountain slopes upward at 48.0 ∘ above the horizontal, and we can model the logs as solid uniform cylinders of mass 575 kg and diameter 1.20 m . find the acceleration of the logs as they roll down the mountain. what is the friction force on the rolling logs? is it kinetic or static?