A barbell spins around a pivot at its center at A. The barbell consists of two small balls, each with mass 400 grams (0.4 kg), at the ends of a very low mass rod of length d = 40 cm (0.4 m; the radius of rotation is 0.2 m). The barbell spins clockwise with angular speed 100 radians/s. We can calculate the angular momentum and kinetic energy of this object in two different ways, by treating the object as two separate balls, or as one barbell. I: Treat the object as two separate balls (a) What is the speed of ball 1? || = m/s (b) Calculate the translational angular momentum trans, 1, A of just one of the balls (ball 1).