1. The problem statement, all variables and given/known data A hollow, spherical shell with mass 1.85kg rolls without slipping down a slope angled at 32.0∘. Find the acceleration, friction force, and coefficient of friction. 2. Relevant equations atan= rα τ=rFsinΘ I=matan 3. The attempt at a solution I'm not quite sure where to begin. I started by making a FBD and using Newton's Second Law to determine Fs-mgsinΘ=max. Since the shape is a hollow sphere, the moment of impulse is I=mr2. I know the frictional force is causing the torque. Without the height of the ramp or the radius of the shell, I'm not quite sure how the proceed, but once I can solve for the acceleration, I should be able to solve for the frictional force and coefficient of friction quickly. This seems like a simple problem, but I'm at a loss with regards to how to approach it.