12-20-2007, 04:15 PM
WRXtranceformed Wrote:It would be like putting a Corvette ZR1 on a lake of ice. You could mash the go pedal as much as you want, all you're going to get is a ton of exhaust gas and some melted ice.
to use your ice example.
you are standing on a frozen lake. you cant walk anywhere because its slippery. your shoes just slip. (Effectively the same as a treadmill - forward motion is negated with equal opposite force, in this case 0-0 = 0 instead of x-x = 0)
there is a branch hanging down from a tree.
you grab the branch and push.
what happens?
you go sailing across the lake.
treebranch = air = what the plane uses to propel itself.