2. Circular Motion Act A B C Answer: B v A ball is going around in a circle attached to a string. If the string breaks at the instant shown, which path will the ball follow (demo)?
3. Acceleration in Uniform Circular Motion a ave = ๏ v / ๏ t Acceleration inward Acceleration is due to change in direction, not speed. Since turns โtowardโ center, must be a force toward center. v 1 v 2 ๏ v v 2 v 1 R ๏ R centripetal acceleration
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Editor's Notes
Use this to motivate circular motion involves acceleration.
http://www.coasterphotos.com/Videos/downloads.htm#Commericals Do ruler nextโฆ.. How far did it goโฆ.
Rotate ruler 90 degrees ask students how far rotated. Motivate meters bad unit, use angles. Also w/ record player