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Basically its a lab where we find how amplitude, bob mass, and length affects the period T for each time.

Our finding was that length affects the period a lot. I did a bunch of graphs and tables and answered all the questions but don't know how I derive this

the question is "From your graph of T^2 vs. L

determine a value for g."

T here is the period in seconds and L is the length of the string in cm. Now I do have to graph and it looks pretty normal to me.

The slope is 0.03900 and the r is 0.9947

now I don't think this would help much at all

(unless its r-slope haha...)

I have to find g from this graph and calculate the percent of error

I know how to calculate the percent of error but I don't know how I can find g from this graph

the points are for x which is length

50

60

70

80

90

100

and for T^2 i have

2.2831

2.4586

2.89

3.3562

3.7288

My first guess was i need to find an equation for this relationship and then

use the formula 4pi^2/g x L = T^2 but I don't know what to do?

plug in what for L? someone please help!