# Period T and length

#### 8parks11

Using Newton’s laws, we could show that for some pendulums, the period T is related to the length and free-fall acceleration g by

T=2pi(sqrt l/g)

Can the term in parentheses be treated as a constant of proportionality?

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#### Office_Shredder

Staff Emeritus
Gold Member
No, because g is always the same, and l varies depending on the pendulum

#### 8parks11

mathematics, two quantities are called proportional if they vary in such a way that one of the quantities is a constant multiple of the other, or equivalently if they have a constant ratio.

I have graphs of T vs. A, T vs L, T vs m

A=Amplitude
L=Length
m=bob mass

It's a pendelum experiment
I have graphs but how would i explain it in the graph

"Period T and length"

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