1. The problem statement, all variables and given/known data A computer is reading data from a rotating CD-ROM. At a point that is 0.0244 m from the center of the disk, the centripetal acceleration is 283 m/s2. What is the centripetal acceleration at a point that is 0.0856 m from the center of the disc? 2. Relevant equations Ac = v^2/r 3. The attempt at a solution So for the first point: 283 = v^2/(.0244) 283 *.0244 = v^2 v^2 = 6.9052 Since v is constant, then plug it into the next equation: 6.9052/(.0856) = Ac Ac = 80.668 m/s^2 However, this does not agree with the answer I should be getting. I don't understand where my math went wrong. This seems like a such an easy problem. Any suggestions? Thanks!