I am having a problem with this question. I cant figure out how to approach it. A solid sphere of mass m and radius r rolls without slipping along the track. it starts from rest with the lowest point of the sphere at height h above the bottom of the loop of radius R, much larger than r. What are the force components on the sphere at he point P if h = 3R? How would I go about solving this problem? I attached a picture of the situation.