Blog 6: Circular Motion, Oh Lauren

          These past two chapters have been about circular motion. In one lab, we learned about how some water (and a duck) could stay in a bucket even when that bucket was twirled over one's head. That was the big scale version. You can also recreate this lab with an uncapped water bottle. I think this is much more entertaining, but mostly because it's Lauren who's doing it (that's real propel in that bottle!).

          The propel stays in the bottle, even when the bottle is completely turned over, because the liquid has enough inertia to want to go in a straight line instead of falling with gravity. Its straight line motion is stopped by the sides of the bottle, making the propel go in a circle along with its container. And, as you can see, none of it spilled out.

          Thanks to Reece for recording this with his iphone!. And for the record, she was laughing about what kind of facial expression she would make while turning the bottle (what a good one :] ). Also, the bottle on the right was Jamie, who would have probably spilled her water had not the cap been on. :]