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From: Jim Pennino <jimp@gonzo.specsol.net>
Newsgroups: sci.physics,uk.politics.misc,alt.conspiracy
Subject: Re: Energy used in a horizontal hold - timed weightlifting
Followup-To: sci.physics
Date: Mon, 8 Jul 2024 08:53:16 -0700
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In sci.physics Dave <dwickford@yahoo.com> wrote:
> Here's a very simple question:
> How do you calculate the energy used by a sportsperson with a timed
> horizonal hold? You hold out a 10kg kettlebell (women) or a 18kg
> kettlebell (men) horizontally in front of you for as long as possible,
> and the person who hold it out longest wins.
> 
> Obviously the longer you hold, the harder it gets until it's torture 
> from lactic acid build up, and you give up.
> 
> The physics I've been taught has no anwser, since energy is newton
> meters. I'm politely suggesting that the energy unit needs a
> rework to include time, and per relativity spacetime.
> 
> Said spectacle isn't in competition so much, too many awkward
> questions? Answer from bad or stupid teachers is:
> "You're not making any sense. Energy is force times distance".
> 
> Some videos talk about specific impulse, which is force times
> time, but this isn't worked into anything else.
> 
> To make the competition even between long arm and short arm people,
> it may be fairer to hold it out for a set distance, not with
> locked elbows.

You are conflating physics and physiology.

Replace the biological entity with a wooden cross and you have the
answer from physics, i.e. zero energy is used.

To get an answer from physiology you need to understand how muscles
work.