# Pi and g

LuGoBi
Have you guys noticed how the acceleration of gravity is almost equal to pi squared?

## Answers and Replies

Yea but you have to remember that the acceleration due to gravity changes with elevation.

http://en.wikipedia.org/wiki/Earth's_gravity

If you found two universal constants that were related like e and i then you have something big.

mgb_phys
Homework Helper
And of course it only works in metric units.
Similairly there afre about 10milion pi seconds in a year.
A second is a milli-fortnight and an inch is an attoparsec.

nicksauce
Homework Helper
Hm? g is 175.55 furlongs/minute^2. How is that almost equal to pi^2? Or does it only work in some arbitrarily selected set of units?

cristo
Staff Emeritus
Hm? g is 175.55 furlongs/minute^2. How is that almost equal to pi^2? Or does it only work in some arbitrarily selected set of units?

mgb_phys has answered that.

Anyway, is there any point to this thread other than "spot the coincidence"?

Borek
Mentor
If you select units correctly, everything is possible. Light speed is almost exactly 1 feet/ns.

nicksauce
Homework Helper
mgb_phys has answered that.

Yes, I know. I just thought a hard example like that might help show the OP how absurd this sort of numerology is.

cristo
Staff Emeritus