1. The problem statement, all variables and given/known data A 1.02 kg ball and a 2.06 kg ball are connected by a 0.95 m long rigid, massless rod. The rod is rotating clockwise about its center of mass at 38 rpm. What torque will bring the balls to a halt in 8.53 s? (Give an absolute value of torque.) 2. Relevant equations torque = F * r sin theta (rpm/60)*2pi= angular velocity (int) anglv fin = anglv int + anglaccel * delta t accel = anglaccel * r F=ma 3. The attempt at a solution First I found the angular velocity initial of the system using the (38rpm/60)*2pi then I found angular acceleration need to reach angular velocity final = 0 in 8.53s by 0 = (38rpm/60)*2pi + angular accel * 8.53s I solved for accel by multiplying the answer found for angular accel by radius which is 0.95/2m. Then i found the torques (F=ma so mass of ball 1 and 2 * accel * radius) and added them together since, I assumed that both forces were in the same direction. I thought that these torques added together would give me my answer. But I'm getting it wrong. Can any one help? did I overlook some element to this problem.