Calculating Mass from Centripetal Force Slope

[bbeaver]

Homework Statement

How do you calculate the mass from slope of a line T^2 on y-axis and 1/f on x axis??

Homework Equations

4π^2mr/fc

The Attempt at a Solution

I don't know how to attempt this. I have a data table and the graph has y=0.7385x-0.0254.
Obviously 0.7385 is the slope but I do not know what to use to get the mass.

 

[grzz]

What is the equation of the graph in terms of physical quantities?

 

[bbeaver]

T^2 = seconds and 1/F = N^-1

 

[grzz]

How and what apparatus is set up? What is the situation as regards Physics?

 

[bbeaver]

Nevermind, it is too late now. I will just have to take a lower grade on my report. Thanks anyway.