Problem 6.8 Modern wind turbines are larger than they appear, and despite their

Question

Problem 6.8 Modern wind turbines are larger than they appear, and despite their apparently lazy motion. the speed of the blades tips can be quite high-many times higher than the wind speed. A turbine has blades 52 m long that spin at 10 rpm . Part A At the tip of a blade, what is the speed? Express your answer to two significant figures and include the appropriate units. Part B At the tip of a blade, what is the centripetal acceleration? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

========================================
apply   V = rW

here W = 14 rpm = 14* 2pi/60 = 1.46 rad/sec

so

V = 52* 1.46

V = 76.19 m/s
---------------------------------

a = rw^2

a = 52 * 1.46*1.46

a = 110.84 rad/s^2
=========================================

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---