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 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 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 don't think I know this stuff off the
top of my head), and convert pounds to kilograms and height to
meters, but then all the terms just drop out and I can look up the
values.
E = 2.268 kg x 9.81 N/kg x .1758 m
E = 3.9114 joules or if converted into food calories 9.3482 x 10^-4.
Which is less than the calories you'd get from eating a stick of
celery. Assuming 15 stairs in a flight, about 9 feet between floors,
I get .014 additional calories to climb a flight of stairs, with the
extra 5 pound burden, assuming I did the math right.
However the actual stress on your body should be the same as just
holding the extra 5 pounds and walking on the level, unless you've
managed to somehow achieve multi g accelerations.
If you're having trouble getting enough oxygen it might feel like the
extra 5 pounds gains weight while you're climbing stairs.
On 6/24/2017 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 sure but I'm
looking for the as if.... related to the stress it puts on my body.
Is it like I'm carrying 5 more lbs? 20 more lbs? etc
answer ON list so ten people don't have to respond :-)
thanks, guys
ann
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