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Uniform Circular Motion A Jet Pilotby Brenwells
Tags: centripetal force, circular, graviational force, motion, radius, uniform, uniform circular, vertical circle 
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#1
Oct613, 02:07 PM

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Hi, my apologies if this has been posted before. I was just wondering if someone could help look over this question for me and confirm if I did it correct or not. It is a written homework rather than online so I can't check my answer to see if I did it correctly.
A jet pilot takes his aircraft in a vertical loop. (a) If the jet is moving at a speed of 840km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's. 840km/h = 233.33 m/s 6g = (6*9.80) = 58.8m/s^2 Equation used a=(v^2)/r but I continue to get confused between which is velocity and acceleration. Would I have r=(233.33^2)/58.8 r=925.90m or r=(58.8^2)/233.33 r=14.82m which the first answer of 925.90m sounds a lot more correct than 14.82 but I just wanted to make sure. If someone could please confirm that would be great. Thank you 


#2
Oct613, 02:51 PM

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Velocity has units of m/s
Acceleration has units of m/s^2 


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