Tennis (table or lawn) players will see here the tactic of returning a
ball with a large top-spin.
Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net http://www.velocity.net/~trebor
----- Original Message -----
From: "Bob Sciamanda" <trebor@VELOCITY.NET>
To: <PHYS-L@lists.nau.edu>
Sent: Friday, May 17, 2002 2:18 PM
Subject: Re: wheels come off - speed doubles?
| A conjecture:
|
| Note the report says "the extra wheels came off". Suppose this means
that
| these wheels were not touching the ground while still attached to the
| moving truck (used only for very heavy loads), but had both rotational
and
| linear momentum. Suppose their rotational speed were greater than that
of
| the contact wheels, which are rolling without slipping. Then when they
| hit the ground this excess rotational energy would transform (via
| friction) into increased translational energy ???
|
| Bob Sciamanda (W3NLV)
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