Calculating Rotation and Movement of a Rotating Fan at 0.17m Radius

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SUMMARY

The discussion focuses on calculating the movement parameters of a rotating fan with a radius of 0.17 meters completing 1200 revolutions per minute (RPM). The distance traveled in one revolution is calculated using the formula for the circumference, yielding approximately 1.067 meters. The speed of the point on the blade is determined to be 17.78 m/s, and the acceleration is calculated using centripetal acceleration formulas, resulting in approximately 0.56 m/s². The period of the motion, which is the time taken for one complete revolution, is calculated to be 0.05 seconds, clarifying the confusion around the incorrect value of 0.057 seconds.

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A rotating fan completes 1200 revolutions every minute. Consider a point on the tip of a blade, at a radius of 0.17 m.
(a) Through what distance does the point move in one revolution?
m
(b) What is the speed of the point?
m/s
(c) What is the magnitude of its acceleration?
m/s2
(d) What is the period of the motion?
s
 
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i have converted my units and still don't understand why i keep coming up wit .057 for part d. i need some guidence
 
tjcreamer9 said:
i have converted my units and still don't understand why i keep coming up wit .057 for part d. i need some guidence

Show us your calculation so we can see what you're doing.
 

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