1. The problem statement, all variables and given/known data You have been assigned the task of designing a flywheel capable of storing the translational kinetic energy of a 600 kg car traveling at 100 km/hr. The flywheel is to be manufactured out of steel and the maximum rotational speed is 12,000 rpm. a. Assuming that the flywheel is a uniform cylindrical disk 50 mm in thickness, calculate the mass and diameter of the flywheel. 2. Relevant equations ω=2π/60 TKE=1/2mv^2 Ig=1/2mr^2 RKE=1/2Ig*ω^2 3. The attempt at a solution Solving for ω 12000rpm*2pi/60=1256.6 rad/s Solving for energy TKE 100*1000/3600=27.8m/s 1/2*600*27.8m/s=231481J Solving for Ig(moment of inertia flywheel) RKE=1/2Ig*ω^2 231481=1/2Ig*1256.6^2 Ig=0.293KG At this point I'm not sure how to go further.