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OpenStudy (anonymous):
A point at the end of a spinning helicopter blade has a centripetal acceleration of 105.8 m/s2. If the velocity of the blade at this point is 23 m/s, how long is the helicopter blade?
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OpenStudy (anonymous):
a = v^2/r r = v^2 / a square the speed, divide it by centripetal acceleration to get radius. You should multiply it by 2 to get the full length of the helicopter blade
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