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Old 08-18-2011, 06:46 PM
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Richard Martin Richard Martin is offline
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Location: Greenville, NC
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Quote:
Originally Posted by JDiepstra View Post
Not sure I agree with this. That's like saying it's easier keeping a semi at 70 up a grade than it is a Corvette because the semi has more mass to keep it going.
You're leaving out the effects of gravity. Since the blade is moving strictly in a horizontal plane to gravity it cancels the effects of gravity out.

Try stopping the Corvette and then try stopping the semi. It takes significantly more force to stop the 82,000 pound semi then it does to stop the 3,100 pound Corvette. It's called inertia.

" Inertia is the resistance of any physical object to a change in its state of motion or rest, or the tendency of an object to resist any change in its motion. It is proportional to an object's mass."

http://en.wikipedia.org/wiki/Inertia

The heavier blade has more inertia due to it's increased mass.
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