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 one year ago
The prop. blade of an airplane is 2.80ft, and rotates @ 2200 r/min. What is the linear velocity of a point on the tip of the blade?
 one year ago
The prop. blade of an airplane is 2.80ft, and rotates @ 2200 r/min. What is the linear velocity of a point on the tip of the blade?

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zpupster
 one year ago
Best ResponseYou've already chosen the best response.1Use \[v=\omega(r)=\theta/t(r)\] \[\theta = 2\pi rad\] t= 1 rev r = .5(2.8)

Bbambino1976
 one year ago
Best ResponseYou've already chosen the best response.0so them telling me the length of the blade holds no grounds?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1Will have to look up how to calculate linear velocity.

Bbambino1976
 one year ago
Best ResponseYou've already chosen the best response.0all I could find was angular velocity , and after about 2 hours on a simple problem hat

ehuman
 one year ago
Best ResponseYou've already chosen the best response.0isnt linear velocity the speed of the circumference?

Bbambino1976
 one year ago
Best ResponseYou've already chosen the best response.0I know there's a relationship between the two.

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1I found this: The formula for finding linear velocity is v = x / t. The x variable is distance traveled, and t is the time it took to travel the distance x. The v variable is the linear velocity. radius = 1.4 feet If prop rotates at 2,200 rev/min that equals 36.666 rev for every second Each turn of the prop means that the tip has traveled 1.4 *2*PI = 8.7964594301 feet Multiplying this by 36.666 rev per second equals 322.54 feet per second.

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1The distance from the prop center to the tip is half of 2.8 or 1.4 for each turn of the prop the tip must travel 1.4*2*PI feet.

Bbambino1976
 one year ago
Best ResponseYou've already chosen the best response.0so we take 2.80 and multiply in 1/2, that gives us half the blade length which is 1.4 ft. is that 1.4x2xpie?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1which equals 8.7964594301 feet

Bbambino1976
 one year ago
Best ResponseYou've already chosen the best response.0now is that ft per second?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.1eventually it is feet per second. At this point we are only determining the distance traveled  which is 8.796 feet

Bbambino1976
 one year ago
Best ResponseYou've already chosen the best response.0persistence pays off i found my page

Bbambino1976
 one year ago
Best ResponseYou've already chosen the best response.0I'd like to thank ehuman and wolf1728, I couldn't have done it without you!

Bbambino1976
 one year ago
Best ResponseYou've already chosen the best response.0wait what am I talking about, im not done here.

zpupster
 one year ago
Best ResponseYou've already chosen the best response.1(2200revs/min)(2 pi rad/rev)(1.4ft)=? that is the equation you need

zpupster
 one year ago
Best ResponseYou've already chosen the best response.1compare it to what i gave you before
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