A barbell spins around a pivot at its center at A. The barbell consists of two small balls, each with mass 450 grams (0.45 kg), at the ends of a very low mass rod of length d = 35 cm (0.35 m; the radius of rotation is 0.175 m). The barbell spins clockwise with angular speed 120 radians/s.
(a) Calculate the translational kinetic energy of ball 1.
(b) Calculate the translational kinetic energy of ball 2.
(c) By adding the translational kinetic energy of ball 1 and the translational kinetic energy of ball 2, calculate the total kinetic energy of the barbell.