# Velocity Lost To Friction

1. Mar 2, 2010

### reesespieces2

1. The problem statement, all variables and given/known data
If you had a track that was in the shape of a loop-de-loop and you send a small brass ball down the track, how would you calculate how much velocity is lost due to friction?
The radius of the loop is .15m.

2. Relevant equations
V = (2πr)/$$\sqrt{}(4(\pi^2)r)/g$$

3. The attempt at a solution
I don't know what equation to use to find the loss of velocity due to friction so I'm not sure how to go about solving the problem.

Last edited: Mar 2, 2010