How Is a Pilot's Apparent Weight Calculated During a Vertical Dive Pullout?

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SUMMARY

The apparent weight of a pilot during a vertical dive pullout is calculated by considering both the gravitational force and the centripetal acceleration. In this case, the pilot's weight is determined using the formula W = mg, where m is the mass (50.0 kg) and g is the effective acceleration at the lowest point of the pullout. The correct calculation incorporates both the gravitational force and the additional force due to the circular motion, resulting in an apparent weight of 1469.9 Newtons when the acceleration is 3g. The minimum radius of the circle required to maintain this acceleration without exceeding 3.00 g is 307 meters.

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Homework Statement


A 50.0kg stunt pilot who has been diving her airplane vertically pulls out of the dive by changing her course to a circle in a vertical plane.

If the plane's speed at the lowest point of the circle is 95.0m/s, what should the minimum radius of the circle be in order for the acceleration at this point not to exceed 3.00 g?
Correct Answer for that was 307m

Question i need help on is:
What is the apparent weight(in Newtons) of the pilot at the lowest point of the pullout?


Homework Equations



W = mg
g=v^2/r
1g = 9.81

The Attempt at a Solution



I assumed that the easy solution would be to find the weight at 3g's so:
50*3*9.81 = 1471.5

Wasn't accepted as correct answer so i decided to solve it like:
F = ma = m(v^2)/r
50*(95^2)/307 = 1469.9

Also, not taken as the correct answer.


Please let me know what I am missing here
Thanks,
~John
 
Physics news on Phys.org
the acceleration of the plane is 3g, but did Earth's gravity turn off?
 
flatmaster said:
the acceleration of the plane is 3g, but did Earth's gravity turn off?

Ok ok! Its ok everyone! I turned the gravity back on! ^_^

Thank you for the help. I didnt think to add that in there and it worked beautifully
~John
 

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