I saw a video of a windmill a few minutes ago and they are quite fast.
But then i thought “Is the tip of the rotorblade as fast as the the point furthest in the middle?”
Let me explain the best i can:
So if you move 10km/h, after 1h you are 10km farther than before. Thats logical.
But with regards to the rotor blade, the point furthest in the middle moves less far than the one all the way outside.
Does that mean that the points move at different speeds even though they’re part of the same body?
Where is my mistake in thinking?
In: Engineering
The speed increases the further you travel from the center, but the angular velocity is constant. We know the outer edge travels further because of the greater speed, but since angular velocity is the same, they complete the same number of revolutions.
As a side tidbit, in rough terms, the surface of the earth is moving at about 1000 mph. And if we put a toy on a turntable, the toy would fly off. And the turntable speed is way less than 1000mph. So why don’t we fly off the earth? It’s because the angular velocity of the earth is calculated from 1 revolution per day, and the turntable is spinning at 33 revolutions per minute—much faster than the earth’s 1 rev per day
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