🤓 Based on our data, we think this question is relevant for Professor Kreymerman's class at FAU.

A disc with moment of inertia I_{1} = 40 kg • m^{2} and angular velocity ω_{1} = 20 rad/s is dropped on to a stationary second disc along the axis of rotation. The second disc has moment of inertia I_{2} = 60 kg • m^{2}. How much rotational kinetic energy is lost?

A. 3200 J

B. 11300 J

C. 8000 J

D. 15000 J

E. 4800 J