1. The problem statement, all variables and given/known data A turntable of radius 25 cm and rotational inertia 0.0154 kg m^2 is spinning freely at 22.0 rpm about its central axis, with a 19.5-g mouse on its outer edge. The mouse walks from the edge to the center. Find (a) the new rotation speed and (b) the work done by the mouse. 2. Relevant equations W = Kf - Ki Inertia for a disk is MR^2 Intertia for a ring is (1/2)MR^2 3. The attempt at a solution solution to part A) 23.7 rpm i have tried the following but they all seem to be wrong (303 mJ, 3.3 mJ, 127 mJ) the answer to part B must be in mJ please give me an idea on how to solve part B.