Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the speed of the blade tips can be quite high - many times higher than the wind speed. A turbine has blades 54 mm long that spin at 14 rpm.
a) At the tip of a blade, what is the speed? Express your answer with the appropriate units.
b) At the tip of a blade, what is the centripetal acceleration? Express your answer with the appropriate units.