Hi, I sincerely hope one of you could please help me with the equations in the following problem. 1. The problem statement, all variables and given/known data A toy car is forced to move along a circular ring placed on a table with no friction. The friction coefficient between the ring and the car is given as μ. At t=0 the car is moving along the inner side of the ring at a tangential velocity v_0. I am asked for the velocity of the car wrt t. 2. Relevant equations 3. The attempt at a solution I wrote down the following equations: (1) N = mg (2) μN - mv^2/r = ma_r (3) v = v_0 + a_r*t Are these equations correct? Is this the correct way to find v_t?