Simple Pendulum

[confused1]

A pendulum has a period of 1.8 s.

a) Its mass is doubled. What is its period now?


b) Its length is doubled. What is its period now?


The original pendulum is taken to a planet where g = 16 m/s2.
c) What is its period on that planet?

[Spectre5]

So what's the equation for the period of a simple pendulum

[confused1]

T = 2*pi / w. What is w for a simple pendulum?

[Spectre5]

T = 2 * Pi * sqrt( L/g )