Re: Dog Strategy
- From: israel@xxxxxxxxxxx (Robert Israel)
- Date: 27 Oct 2005 07:21:38 GMT
In article <1130277043.762158.11520@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
conesetter <conesetter@xxxxxxxxxxxxxxx> wrote:
>
>Keith A. Lewis wrote:
>> hrubin@xxxxxxxxxxxxxxxxxxxx (Herman Rubin) writes in article
><djm1en$55r2@xxxxxxxxxxxxxxxxxxxx> dated 25 Oct 2005 14:35:51 -0500:
>> >Which can change direction more easily, a bullfighter
>> >or a bull, a cowboy or a steer?
>> >
>> >With two legs, just putting one down at an angle changes
>> >direction, but this does not work with four.
>>
>> Ahh, I see what you mean. Upright orientation lowers man's moment of
>> inertia about the vertical axis.
> But doesn't momentum also come into it?
Maybe not in the way you think. In non-relativistic physics,
the x-component of velocity doesn't affect the amount of force
needed to change the y-component of velocity by a given amount
in a given time. On the other hand, a running animal or human
may find it harder to apply that force for various reasons,
one being that their feet are not always in contact with the
ground.
Robert Israel israel@xxxxxxxxxxx
Department of Mathematics http://www.math.ubc.ca/~israel
University of British Columbia Vancouver, BC, Canada
.
- References:
- Re: Dog Strategy
- From: Herman Rubin
- Re: Dog Strategy
- From: Keith A. Lewis
- Re: Dog Strategy
- Prev by Date: Re: How many books does Alice have?
- Next by Date: Re: More on triangle numbers and primes!
- Previous by thread: Re: Dog Strategy
- Next by thread: isometry in Euclidean space
- Index(es):
Relevant Pages
|
