...to do a Taylor series expansion of an expression for the gravitational field? My physics teacher did a it few times on the board, but I do not understand how it gives me more information about the asymptotic behavior than substituting some scaled factor in for r, and then solving the limit as that dimensionless number goes to 0 or infinity. (i.e. finding the field of a uniform ring w/ radius d and distance r away from something, approaches the field of a point mass as r goes to infinity or d goes to zero). Maybe it is useful for something else?(adsbygoogle = window.adsbygoogle || []).push({});

Thanks,

-Scott

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Why is it useful

**Physics Forums | Science Articles, Homework Help, Discussion**