1. The problem statement, all variables and given/known data A turntable is a uniform disc of mass m and radius R. The turntable is initially spinning clockwise when looked down on from above at a constant frequency f_0. The motor is turned off at t=0 and the turntable slows to a stop in time t with constant angular deceleration. a. What is the magnitude of the angular acceleration of the turntable? Express your answer in terms of f_0 and t b. What is the magnitude of the total angle Δθ in radians that the turntable spins while slowing down? Express your answer in terms of f_0 and t 2. Relevant equations We have to find them! 3. The attempt at a solution I know that the initial angular velocity is = 2 * pi * f_0 I'm not very good at maths but I think the solution to part a is derived from differentiating the equation for angular velocity. I did that and got my answer as angular acceleration = - 2 * pi * (f_0)^2 which is wrong. I'm not sure where I went wrong though. As for part b, I tried integrating the equation of angular velocity but I'm getting a wrong answer as well?