Energy is to be stored in a 70.G-kg flywheel in the shape of a uniform solid disk

Question:

Energy is to be stored in a 70.G-kg flywheel in the shape of a uniform solid disk with radius R = 1.20 m. To prevent structural failure of the flywheel, the maximum allowed radial acceleration of a point on its rim is 3500 m/s2. What is the maximum kinetic energy that can be stored in the flywheel?