""Nick Müller"" wrote in message
...
Kelly Jones wrote:

Remember ol' Newton said about equal and oppostite reactions?

actio = reactio


Think of it like this:
Stand with you hands against the wall. Move your legs back away from the
wall until you will surely fall over if not for leaning against the wall.
Feel the force in you hands? It's coming from your body weight. Now
repeat
this except lean against someone elses' hands (kind of like forming an
arch
for the kiddies after a soccer game). Did the force you feel in your
hands
double? After all, the force comes from your body weight (like the wall
experiment) as well as the other person.

Now if you replace the wall with a leaf spring (the wall is actually a
very stiff one), it will deflect with one person pressing against it. If
you put the leaf spring between the two hands, it will not deflect,
because equal force is coming from two opposite sides. - Double the
force.


So, Nick, try this: Put a brittle spring between your hands (I suggest an
egg). Press both hands together real hard. According to your note, the egg
will not break (deflect) "because equal force is coming from two opposite
sides".