TBig Ben, the nickname for the clock in Elizabeth Tower (named after the Queen in 2012) in London, has an hour hand l1 = m long with a mass of m1 = kg and a minute hand l2 = m long with a mass of m2 = kg (Fig. P10.49). Calculate the total rotational kinetic energy of the two hands about the axis of rotation. (You may model the hands as long, thin rods rotated about one end. Assume the hour and minute hands are rotating at a constant rate of one revolution per 12 hours and 60 minutes, so ω1 =
ω2 = respectively.)