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-----Original Message-----phys-l@carnot.physics.buffalo.edu;
From: Richard Hake [mailto:rrhake@earthlink.net]
Sent: Fri 9/21/2007 6:38 PM
To: AP Physics
Cc: ap-physics@lyris.collegeboard.com;
PHYSHARE@LISTS.PSU.EDU
Subject: Re:[ap-physics] The Swinging Bucket Problem
Dave Van Domelen (2007) in his PhysLrnR post of 21 Sep 2007 titled
"The Swinging Bucket Problem" wrote [bracketed by lines "DDDDD. . .
."; my insert at ". . . .[insert]. . . .":
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
I'm curious as to whether anyone knows of research that's been done
on. . . . ["The Swinging Bucket Problem"]. . . . (I'll go journal
hunting if no one knows, but it's the sort of thing that I suspect
might be hard to find by name).
When introducing centripetal force, one of the classic examples is
the "how fast do I have to spin a bucket in a vertical circle to
avoid water spilling out?" problem. It's got plenty of subtleties to
help divide those who really understand the situation from the plug
and chuggers (for instance, anyone who draws tension in as a force on
the water is probably not thinking too carefully about the situation).
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .