1. The problem statement, all variables and given/known data If we look at a bowling-ball rolling up an uncline without slipping, I have to find the acceleration of this. I was wondering: May I choose by myself where to look at the torque? I mean, can I decide by myself whether I look at the center of the ball where the sum of the torque is the friction_force *radius or if I want to look at the point where the ball and the ground touch eachother and where gravity is the only force in the torque? I just use parallelaxis-theorem in this case. I hope you understand.