1. The problem statement, all variables and given/known data A 4.80 g coin is placed 11.0 cm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of us = 0.770 and uk = 0.400. What is the maximum angular velocity with which the turntable can spin without the coin sliding? (In rad/s) 2. Relevant equations Ff = FN(u) Fa = (mv^2)/r 3. The attempt at a solution I've always been a little foggy on rotational motion, but for this I converted the grams to kilograms and the centimeters to meters, then set the friction equal to the acceleration: (.0048)(9.8)(.77) = [(.0048)(v^2)]/.11 Which gave me a v of .911 rad/s. I'm not sure what I did wrong/what I'm missing.