Measurement of Gravity (Simple Harmonic Motion)

[KillerQueen20]

Homework Statement

If the slope of your gradient turns out to be 4.041 s^2.m^-1 then what value would you obtain for g? State your answer in m.s^2 and to 3 significant figures.

Homework Equations

T^2 = (4 pi^2 e1 / g) - (4 pi^2 e0 / g)

This is the one I'm supposed to use. Other ones given are...

T^2 = (4 pi^2 e) / g

e = e1 - e0

The Attempt at a Solution

I have no idea what I'm supposed to be doing. Graph is T^2 vs. e1
I did, however, look on the internet. There is a lot of stuff about a spring constant, but that's not mentioned anywhere on my sheet. Values are different and I can't get my head around it properly.

Thanks for your help =)

 

[rl.bhat]

The gradient m is supposed to be T^2/e1.
Now g = 4*pi^2*e/T^2 = 4*pi^2/m