This experiment is from the Jacaranda HSC Science Physics 2 book. (pg 11 analysis questions if you have the book)
As I understand,
>From the Period formula (T=2*pi root l/g <-cbf to write properly), you can make it [4*(pi)^2]/g = T^2/L.
>T^2/L is m(gradient) as T^2 is the y axis and L is the...