Spot the Fallacy

[Mike Taylor <mike@indexdata.com>]

I'd be grateful if someone could point out the fallacy in the
following reasoning.  Replies OFF-list, please; I'll summarise.

        If a sauropod has no ligament support for its neck, it
        has to hold it up using muscle-power entirely.  How
        much energy does this use?  Well, energy is the
        capacity to do work, so doing work is the thing that
        uses up energy.  But work done is force applied times
        distance moved; and since all the sauropod is doing is
        holding the neck steady (not raising it), the distance
        moved is zero whatever the force involved -- so the
        work done is zero, and the energy used is also zero!

This _can't_ be right ... can it?

 _/|_    _______________________________________________________________
/o ) \/  Mike Taylor  <mike@indexdata.com>  http://www.miketaylor.org.uk
)_v__/\  "It's easier to hire nice people and teach them about cars
         than to train someone to be nice" -- Randy Haynes, Service
         Manager, Fred Brown Mazda BMW.

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