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Originally Posted by SteveC examples |
In your first example, I'm going to disagree, however. Your foot lifts off the treadmill and moves forward, this covers the distance that the belt moves your foot back...
And in your rollerblade example... let's insert some concrete numbers...
You start at 0 m/s (in true physics notation)... You accelerate to 10 m/s as the belt also accelerates at the same rate (and at the same time) to the same speed. Net result: 0 m/s. Basically, this is elementary relativity... If we look at the system as a whole, however, there's no net velocity. Which means there's no wind, thus no lift on our hypothetical wing, yes?
Not saying you're wrong or anything, just trying to get an explanation... I might have to find some rollerblades and go on the treadmill tomorrow
