1. The problem statement, all variables and given/known data A small 650 gram ball on the end of a thin light cord is rotated in a horizontal circle of radius 1.2 m. Calculate the torque needed to keep the ball rotating at a constant angular velocity if air resistance exerts a ofrce of 0.020 N. Ignore the rod's moment of intertia and air resistance. 2. Relevant equations T= Ia(alpha) 3. The attempt at a solution Well I found the moment of inertia but Im stuck on where to go next. Please help me!