A simple pendulum has a time period of 2.5s at sea level on Earth where g=9.80m s−2. The same pendulum is taken to the Moon where g=1.62m s−2. Answer the following:
(i) Determine the length of the pendulum on Earth.
(ii) Calculate its time period on the Moon.
(iii) To bring its period back to 2.5s on the Moon, by what percentage should its length be changed? State whether the length should be increased or decreased.