Consider a scenario in which the flywheel described in part (a) (r1 = 1.7 m, mass m1 = 19 kg, v = 55 m/s at the rim) is spinning freely at its maximum speed, when a second flywheel of radius r2 = 2.1 m and mass m2 = 29 kg is coaxially dropped from rest onto it and sticks to it, so that they then rotate together as a single body. calculate the energy, in joules, that is now stored in the wheel.