Kinetic Energy of a flat uniform disk

themilkman

1. The problem statement, all variables and given/known data

A flat, uniform, disk, of radius 1.5 m and mass 10 kg, is rolling on its edge with a translational velocity of 12 m/s.
What is the kinetic energy of the disk?


2. Relevant equations

not sure which one but I'm guessing it's one of these two:
K = .5(I)(w)^2
K = .5(Icm)(w)^2 + .5(M)(v)^2cm

3. The attempt at a solution

I have absolutely no idea how to even start this problem, any help on what eqn to use and what I is would be extremely helpful

mgb_phys

For a rolling object - the total energy is the kinetic energy of the moving mass PLUS the rotational energy.