Two particles, each with mass m = 4.1 g, are fastened to each other and to a rotation axis at P, by two thin rods, each with length L = 0.71 m and a mass of 7.6 g, as shown. The combination rotates around the rotation axis with an angular velocity of 13.4 rad/s. Find the rotational inertia of the combination about P? And What is the kinetic energy associated with the rotation about P?
