- #1

-Vitaly-

- 39

- 0

## Homework Statement

http://img124.imageshack.us/img124/4485/clipboard01hb6.jpg

## Homework Equations

magnitude of n, u=1, u is in the direction of the velocity

**u**=

**V**/V

## The Attempt at a Solution

The 1st part is easy, I wrote:

http://img129.imageshack.us/img129/1244/clipboard01mv3.jpg

But I can't do the second part, I read about 10 different sources about these unit vectors, but now I'm even more confused. Especially about so called "radial" and "transverse" unit vectors, they are not "tangential" and "normal" unit vectors?

Anyway, for this part I tried analytical approach:

http://img129.imageshack.us/img129/7342/clipboard01tu6.jpg

But not sure what to do next. Or another approach:

http://img129.imageshack.us/img129/287/clipboard02ve7.jpg

Any help will be appreciated, I spent about 2 days on this problem alone

Last edited by a moderator: