A tower outside the Houses of Parliament in London has a famousclock commonly referred to as Big Ben, the name of its 13-tonchiming bell. The hour hand of each clock face is 2.7 m longand has a mass of 60.0 kg. Assume the hour hand to be auniform rod attached at one end.
a) What is the torque on the clock mechanism due to the weight of one of the four hourhands when the clock strikes noon? The axis of rotation isperpendicular to a clock face and through the center of theclock.
b) What is the torque due to the weight of on hourhand about the same axis when the clock tolls 9:00 am?