Problem: Wind turbines designed for offshore installations are much larger than ones designed for use on land. One company makes a turbine for use on land with blades 38m long that spin at 18rpm, and a turbine for use offshore with blades that are twice as long.
Part A: At what rate should the blades of the offshore turbine rotate if the speed at the tip is to be the same as that of the turbine on land?
I need help to calculate at what rate the blades of the offshore turbine should rotate.