You have a simple pendulum and a mass-spring system in which the mass oscillates vertically. They both oscillate with the same period T. You take them both to the surface of the Moon, where the gravitational field is 1/6 that of Earth. 

(a) Is the period of the simple pendulum on the Moon greater than, equal to, or less than T? Explain. 

(b) Find the ratio of the pendulum’s period on the Moon to its period on Earth (TM/T). 

(c) Is the period of the mass-spring system on the Moon greater than, equal to, or less than T? Explain. 

(d) Find the ratio of period on the Moon to the period on Earth (TM/T).