1. The problem statement, all variables and given/known data A wheel has a radius of 0.4m . The engine exerts a torque on the wheel of 290 Nm. FInd the coefficient of friction. 2. Relevant equations T=RFsin T= Angular acceleration * Inertia (1/2MR^2)? 3. The attempt at a solution My friend asked me this question, but I feel like there should be more information. Just based on these info, how can you solve this question? Do I set the two equation equal and find for F? What would be the angular acceleration?