Question
What is the length of second's pendulum on the surface of the moon?
Solution
The pendulum whose time period is 2 seconds is called Secon's pendulum.
That is, time period of a pendulum is given by,
[because on the surface of the moon, a=g/6]

= 0.1655m
= 16.55cm
That is, time period of a pendulum is given by,

[because on the surface of the moon, a=g/6]

= 0.1655m
= 16.55cm