In Figure, two particles, each with mass m = 0.85 kg, are fastened to each other, and

Question:

In Figure, two particles, each with mass m = 0.85 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.6 cm and mass M = I.2 kg. The combination rotates around the rotation axis with angular speed w = 0.30 rad/s. Measured about O, what are the combination's

(a) Rotational inertia and

(b) Kinetic energy?