Date: 21/04/2013 20:35:03
From: monkey skipper
ID: 298877
Subject: Tall and Short energy to walk
Is there a difference if you are 6’4” and 4’6” if you walk the same set distance?
Meaning does either participant exert more or less energy from the other?
For this example. Consider both parties to be fit and healthy weight to height ratio otherwise.
Date: 21/04/2013 20:38:46
From: Mr Ironic
ID: 298886
Subject: re: Tall and Short energy to walk
Is there a difference if you are 6’4” and 4’6” if you walk the same set distance?
—————————————————————————————
Depends on whether you are walking uphill or down dale…
Date: 21/04/2013 20:40:48
From: monkey skipper
ID: 298890
Subject: re: Tall and Short energy to walk
Mr Ironic said:
Is there a difference if you are 6’4” and 4’6” if you walk the same set distance?
—————————————————————————————
Depends on whether you are walking uphill or down dale…
Why is that?
Or were you only trying to be funny?
Date: 21/04/2013 20:44:47
From: Mr Ironic
ID: 298896
Subject: re: Tall and Short energy to walk
Why is that?
———————
Because there is more work to do for the bigger guy going uphill…
On the flat, dunno, the advantages v’s the disadvantages propbably rule each other out.
Date: 21/04/2013 21:00:31
From: monkey skipper
ID: 298911
Subject: re: Tall and Short energy to walk
Mr Ironic said:
Why is that?
———————
Because there is more work to do for the bigger guy going uphill…
On the flat, dunno, the advantages v’s the disadvantages propbably rule each other out.
there are more steps required by the shorter person. why does that not factor higher or equal to the taller guy?
Date: 21/04/2013 21:05:38
From: Mr Ironic
ID: 298926
Subject: re: Tall and Short energy to walk
there are more steps required by the shorter person. why does that not factor higher or equal to the taller guy?
————————————————————
I suggested equal, because mass is less yet stride is shorter…
Date: 21/04/2013 23:00:04
From: OCDC
ID: 299064
Subject: re: Tall and Short energy to walk
Date: 21/04/2013 23:18:31
From: Mr Ironic
ID: 299073
Subject: re: Tall and Short energy to walk
What are their masses?
——————————————
Equivalent to their, there, they’re height.
Date: 22/04/2013 19:08:51
From: monkey skipper
ID: 299431
Subject: re: Tall and Short energy to walk
Date: 24/04/2013 20:14:28
From: mollwollfumble
ID: 300629
Subject: re: Tall and Short energy to walk
> Is there a difference if you are 6’4” and 4’6” if you walk the same set distance? Meaning does either participant exert more or less energy from the other?
Hmm, it’s not as simple as that. If both people had perfectly elastic soles to their feet and perfectly elastic joints and if you ignore wind resistance and set the slope to zero then the energy required for walking approaches zero. But joints and the soles of feet (particularly of heels, the rest of the foot just provides propulsion) act as spring plus ‘dashpot’ systems where energy is lost in each dashpot. The faster a dashpot operates the less energy is lost.
A lot of energy is lost through the knees, this is necessary so that you don’t accelerate uncontrollably when going down a hill.
So apart from doing a physical experiment there’s no obvious way to tell.
On the other hand, look very closely at the definition of the word “fitness”. Fitness is defined as the oxygen consumption for a given unit of work. But work here is not well defined. If work is taken to be walking on a horizontal surface, such as a treadmill near zero load, and oxygen is taken as energy input, then by definition an equally fit person will require the same energy to walk the same distance.
Date: 24/04/2013 20:18:19
From: sibeen
ID: 300633
Subject: re: Tall and Short energy to walk
>Fitness is defined as the oxygen consumption for a given unit of work.
Is it?
I’ve never actually seen a definition of fitness before.
Date: 24/04/2013 20:18:27
From: The Rev Dodgson
ID: 300634
Subject: re: Tall and Short energy to walk
mollwollfumble said:
> On the other hand, look very closely at the definition of the word “fitness”. Fitness is defined as the oxygen consumption for a given unit of work.
Who defines fitness like that?
Seems a very strange definition to me.
Date: 24/04/2013 20:32:01
From: Mr Ironic
ID: 300652
Subject: re: Tall and Short energy to walk
Seems a very strange definition to me.
————————————————————-
I’ve always been taught that fitness can be graded on the time it takes to recover and go again.
So how much oxygene it takes to recover from the risidual lactic acid makes sense.
Date: 24/04/2013 21:57:25
From: dv
ID: 300695
Subject: re: Tall and Short energy to walk
I’ve never actually seen a definition of fitness before.
—-
You’re remarkably polite.
Date: 24/04/2013 22:03:32
From: sibeen
ID: 300707
Subject: re: Tall and Short energy to walk
dv said:
I’ve never actually seen a definition of fitness before.
—-
You’re remarkably polite.
I always am.
Now, what the fuck are you doing here?
Date: 24/04/2013 22:04:05
From: dv
ID: 300708
Subject: re: Tall and Short energy to walk
Hoping to teach and learn.
Date: 24/04/2013 22:10:47
From: sibeen
ID: 300713
Subject: re: Tall and Short energy to walk
dv said:
Hoping to teach and learn.
Learning to use the oxford comma should be one of your first educational experiences :)
Date: 24/04/2013 22:13:49
From: dv
ID: 300715
Subject: re: Tall and Short energy to walk
WTFAYTA?
I haven’t missed an Oxford comma.
Date: 24/04/2013 22:17:26
From: wookiemeister
ID: 300717
Subject: re: Tall and Short energy to walk
dv said:
WTFAYTA?
I haven’t missed an Oxford comma.
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Date: 24/04/2013 22:17:29
From: wookiemeister
ID: 300718
Subject: re: Tall and Short energy to walk
dv said:
WTFAYTA?
I haven’t missed an Oxford comma.
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Date: 24/04/2013 22:17:52
From: sibeen
ID: 300719
Subject: re: Tall and Short energy to walk
>WTFAYTA?
Whilst I do comprehend the first five letters of your acronym, the last two do seem to allude me; saying that, is there any real reason to use such crude language on a forum that may be sighted by kiddies?
Really! hurrummphh
Date: 24/04/2013 22:19:23
From: sibeen
ID: 300720
Subject: re: Tall and Short energy to walk
…and I’ve just put the lat two letters together.
I’m a fucking guiness.
Date: 24/04/2013 22:20:15
From: wookiemeister
ID: 300721
Subject: re: Tall and Short energy to walk
sibeen said:
>WTFAYTA?
Whilst I do comprehend the first five letters of your acronym, the last two do seem to allude me; saying that, is there any real reason to use such crude language on a forum that may be sighted by kiddies?
Really! hurrummphh
Why The Funny Answer You Treasured Angel
Date: 24/04/2013 22:26:01
From: sibeen
ID: 300724
Subject: re: Tall and Short energy to walk
dv said:
Hoping to teach and learn.
To be serious, if only for one moment.
ASAIK, an oxford comma is used after an ‘and’. So, your sentence above, with an oxford comma added would become: “Hoping to teach, and learn”.
Date: 24/04/2013 23:14:47
From: dv
ID: 300730
Subject: re: Tall and Short energy to walk
ASAIK, an oxford comma is used after an ‘and’. So, your sentence above, with an oxford comma added would become: “Hoping to teach, and learn”.
—-
That would not be an Oxford comma. You need at least items for it to be an Oxford comma.
Date: 24/04/2013 23:18:05
From: Bubblecar
ID: 300731
Subject: re: Tall and Short energy to walk
>You need at least items for it to be an Oxford comma
Hmm.
Date: 24/04/2013 23:18:52
From: dv
ID: 300732
Subject: re: Tall and Short energy to walk