I know I’m late in the discussion but I just saw the thread now and, as a
physicist, I thought I could provide some insights into this question (but no
answer).
One way of seing the problem is to consider only the vertical movement
(equivalent to standing in an elevator going up in small steps
in my case, it would be more like restless cat syndrome
a
On 6/25/2017 1:05 PM, Alan C wrote:
Restless leg syndrome?
Alan C
-Original Message- From: ann sanfedele
Sent: Sunday, June 25, 2017 6:48 PM
To: Steve Cottrell ; Pentax-Discuss Mail List
Subject: Re: OT - "as if&quo
Restless leg syndrome?
Alan C
-Original Message-
From: ann sanfedele
Sent: Sunday, June 25, 2017 6:48 PM
To: Steve Cottrell ; Pentax-Discuss Mail List
Subject: Re: OT - "as if" physics question
thought you'd like to know that :-)
ann
On 6/25/2017 12:40 PM, Steve Cott
thought you'd like to know that :-)
ann
On 6/25/2017 12:40 PM, Steve Cottrell wrote:
On 25/6/17, ann sanfedele, discombobulated, unleashed:
I was happy to learn that even asleep we burn calories
Here here!
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> On 25 Jun 2017, at 17:16, Steve Cottrell wrote:
>
> On 25/6/17, Jostein, discombobulated, unleashed:
>
>> So if you just stand still there's no energy spent?
>
> Steve's Law:
>
> A body at rest tends to fall asleep.
>
> True.
>
I think we are now straying into the realm of metabolics.
On 25/6/17, Jostein, discombobulated, unleashed:
>So if you just stand still there's no energy spent?
Steve's Law:
A body at rest tends to fall asleep.
True.
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That is a complicating factor, you spend energy, whether you want to or
not. If you stand still there's no additional energy spent, and my
calculations may be off by an order of magnitude. I didn't bother to
check my work.
On 6/25/2017 7:01 AM, Jostein wrote:
P.J.,
So if you just stand st
On Sat, Jun 24, 2017 at 12:33 PM, ann sanfedele wrote:
> What is the difference in virtual weight of a pack (say, ten lbs) being
> carried bys omeone walking on level ground and the same person carrying
> the same pack up a flight of stairs?
>
> I'm sure I'm not using the corrrect terms here, I"m
P.J.,
So if you just stand still there's no energy spent?
E = 2.268 kg x 9.81 N/kg x 0 m
:-)
Jostein
Den 25.06.2017 05.25, skrev P. J. Alling:
I don't think that the comparison works, exactly. The amount of energy
required to lift 5lbs 7 inches (about the height of a stair step), is
prett
Den 25.06.2017 04.04, skrev P. J. Alling:
E = mc^2 probably comes into it somewhere...
Oh geez, I hope not, or else Ann is atomic powered.
We all are, P.J.
What we don't want is to convert Ann from mass to energy. :-)
Jostein
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I don't think that the comparison works, exactly. The amount of energy
required to lift 5lbs 7 inches (about the height of a stair step), is
pretty simple math but does involve knowing the energy needed to
overcome the acceleration due to gravity in Newtons per kg, which, I
looked up, (you do
E = mc^2 probably comes into it somewhere...
Oh geez, I hope not, or else Ann is atomic powered.
On 6/24/2017 1:31 PM, Bob W-PDML wrote:
The mass of the pack doesn't change, but as you step up you are having to lift
with each leg in turn your own mass plus the mass of the pack, which you a
Actually, I won't be taking advantage of that caolorie burning potential
increase very often, because it will wreck my knee joints and spine.
as earlier mentioned, I do have sherpas
ann
On 6/24/2017 8:50 PM, Jostein wrote:
Came to the same result as Bill on the added calories needed to bring
t
Came to the same result as Bill on the added calories needed to bring
the pack up one flight of stairs. But that's just the extra energy now
"stored" in the package as potential energy.
A backwards trace of the energy could look something like this:
To transfer the energy to the package, your
ormal weight.
On Sat, 24 Jun 2017 16:02:19 -0400, Ken Waller
wrote:
-Original Message-
From: David J Brooks
Subject: Re: OT - "as if" physics question
Is it an African package or European package.:-)
And are you migrating
Dave
On Sat, Jun 24, 2017 at 12:33 PM
Thanks all you smart gents
arrrgh - I answered Bob, and Jack and you hitting "reply" I just noticed
all interesting answers but yours was the one I like best , if your
math _is_ right - it sure FEELS like it...
10 ft celings here - no wonder I'm maintaing my relative svelt
dimensions :-)
On Sat, Jun 24, 2017 at 10:34 AM ann sanfedele wrote:
> What is the difference in virtual weight of a pack (say, ten lbs) being
> carried bys omeone walking on level ground and the same person carrying
> the same pack up a flight of stairs?
It's 42.
Actually, it's about 32.4 calories to carry
its as if you added 10 extra pounds, its just more work because its uphill
just like walking upstairs is more work for your normal weight.
On Sat, 24 Jun 2017 16:02:19 -0400, Ken Waller
wrote:
-Original Message-
From: David J Brooks
Subject: Re: OT - "as if" physic
-Original Message-
>From: David J Brooks
>Subject: Re: OT - "as if" physics question
>
>Is it an African package or European package.:-)
And are you migrating
>Dave
>
>On Sat, Jun 24, 2017 at 12:33 PM, ann sanfedele wrote:
>> What is the differ
Is it an African package or European package.:-)
Dave
On Sat, Jun 24, 2017 at 12:33 PM, ann sanfedele wrote:
> What is the difference in virtual weight of a pack (say, ten lbs) being
> carried bys omeone walking on level ground and the same person carrying
> the same pack up a flight of stairs?
You have defined why one would tire
when walking if each step represented a lift rather than that
required on a level surface.
J
Sent from my iPhone
> On Jun 24, 2017, at 10:31 AM, Bob W-PDML wrote:
>
> The mass of the pack doesn't change, but as you step up you are having to
> lift with each
There are some equations on this site, related to bicycles, but similar
question. I leave it as an exercise for the reader to rearrange the terms
appropriately, since I've never studied physics.
https://bicycles.stackexchange.com/questions/13090/extra-power-needed-uphill-for-weight-increase
B
The mass of the pack doesn't change, but as you step up you are having to lift
with each leg in turn your own mass plus the mass of the pack, which you are
not having to do, to the same extent, when you walk on level ground, so you are
using more energy.
To convert it to additional weight I sup
Same gravity, each step up
represents a sense of it's
pull.
J
Sent from my iPhone
> On Jun 24, 2017, at 9:33 AM, ann sanfedele wrote:
>
> What is the difference in virtual weight of a pack (say, ten lbs) being
> carried bys omeone walking on level ground and the same person carrying
> the sam
What is the difference in virtual weight of a pack (say, ten lbs) being
carried bys omeone walking on level ground and the same person carrying
the same pack up a flight of stairs?
I'm sure I'm not using the corrrect terms here, I"m sure but I'm looking
for the as if related to the stress
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