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Explain why the Robinson R-22 helicopter has a maximum RPM of approximately 530 and the Cessna 172 propeller has a maximum RPM of 2,700. *Hint:

Explain why the Robinson R-22 helicopter has a maximum RPM of approximately 530 and the Cessna 172 propeller has a maximum RPM of 2,700.

*Hint: *

**Consider only aerodynamic forces and effects and do not include any explanation of mechanical limitations**

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