Hello everyone, I think i did this problem right, but I want to make sure sure. The directions are as fallows:(adsbygoogle = window.adsbygoogle || []).push({});

(a) find the unit tagent and unit normal vectors T(t) and N(t).

(b) Use Formula 9 to find curvature.

Note: formula 9 is the one i have on my paper: k(t) = |T'(t)|/|r'(t)|;

my curvature came out as 1/t, is it okay that it still has the variable t in it or was it supppose to be a real number? it is a function of t so i'm assuming its okay. here is the problem and work, if its too hard to read tell me and i'll try to rescan it, the work from the other side is showing through alittle

http://img138.imageshack.us/img138/1275/kurve6kg.jpg [Broken]

Thanks!

**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!

# Homework Help: Finding unit tagnet and normal vectors, can you see if i messed up? is curvature t?

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