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Rigid rods of negligible mass lying along the y axis connect three particles. The system rotates about the x axis with an angular speed of 2.70 rad/s. 4.00 kg ( O y = 3.00 m 2.00 kg y = -2.00 m 3.00 kg y = -4.00 m i (a) Find the moment of inertia about the x axis. kg. m (b) Find the total rotational kinetic energy evaluated from 1. J (c) Find the tangential speed of each particle. 4.00 kg particle m/s m/s m/s 2.00 kg particle 3.00 kg particle (d) Find the total kinetic energy evaluated from J /mv. (e) Compare the answers for kinetic energy in parts (b) and (d).