One of the limitations on the design of modern windmills for the generation of e
ID: 2142268 • Letter: O
Question
b) What is the acceleration of the blade tips, in m/s2?
Explanation / Answer
Speed of tip = 2*pi*r*46 /60
= 202.32 m/s
Fraction of speed of sound = 202.32/340 = 0.595
(b) a = v^2/r = 202.32^2 /42 = 974.6 m/s^2
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