# Investigating a Rolling Ball-Bearing

1. Mar 9, 2004

2. Mar 9, 2004

### jamesrc

It shouldn't be too hard to predict the time it will take for the ball to roll down the ramp for a given angle.

For a first pass model, assume that the ball bearing has uniform density and that the ball rolls without slip down the ramp.

Find the net torque to find the (constant) acceleration down the ramp. Keep in mind that a = R&alpha; (that could be negative depending on your sign convention; just stay consistent). With the acceleration known, the time calculation should be easy. Please post your work if you have any trouble with this so we can help some more.