Re: misconception re ice melting under skates

[brian whatcott <inet@intellisys.net>]

In carrying out some informal experiments on cutting ice, 
a correspondent mentioned prior calculations on the list. 
I could not find the ones in question, but I looked over
this note:


At 11:46 2/26/98 EST, David Dockstader wrote:
> ... there is friction.  Just
> estimating the frictional force at 10 N for convenience I get 10 J of work or
> 2.4 cal for every m the skate slides.  This will melt 0.03 cc of water which
> will create a film of water 1 mm X 0.03mm X 1 m.  Reduce the force, widen my
> blades or whatever and you still get a very substantial film of water. 

I cannot make this film volume from this melt volume.
A point that probably reinforces Dockstader's position.

Whatcott