Horse Power and its Effectiveness

[Shannen Durphey]

digi wrote:
> 
<snip>
> 
> im probably grossly wrong here. but my understanding is that gravity is
> providing the only resistance, which is in the force pulling down, which
> in turn produces friction etc etc and makes it what requires so much power
> to accelerate.
> 
For the hands on type guys, I read that the astronauts fixing the
Hubble had trouble with some bolts.  Seems that a small twist CCW was
enough for a bolt to slowly unscrew and begin to float away.  Imagine
the time saver if you could start all the bolts in your intake
manifold unscrewing themselves while you head off to call the parts
store.
Shannen