The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. The speed of the airplane is 240 mi/h, at the top of the loop and 450 mi/h at the bottom, and the radius of the circle is 1 340 ft. Note: His apparent weight is equal to the magnitude of the force exerted by the seat on his body.
(a) What is the pilot's apparent weight at the lowest point if his true weight is 160 lb?
lb

(b) What is the magnitude of his apparent weight at the highest point?
lb

(c) Describe how the pilot could experience weightlessness if both the radius and the speed can be varied.

Question

The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. The speed of the airplane is 240 mi/h, at the top of the loop and 450 mi/h at the bottom, and the radius of the circle is 1 340 ft. Note: His apparent weight is equal to the magnitude of the force exerted by the seat on his body.
(a) What is the pilot's apparent weight at the lowest point if his true weight is 160 lb?
  lb

(b) What is the magnitude of his apparent weight at the highest point?
  lb 

(c) Describe how the pilot could experience weightlessness if both the radius and the speed can be varied.

anonymous · Answer

$$a=\frac{ v ^{2} }{ r }$$ Where as a is the acceleration due to the motion. So at the top of the circle subtract $$9.8m/s^{2}-convert-to-mi/h^{2}$$ and at the the bottom add it to get total acceleration at the top subtract. BTW why are they using miles and pounds...

anonymous · Answer

I have no idea, and thank you so much for the response, unfortunately it was due at 11:59pm. :( A little too late, and now I don't want to hear about Physics. haha!

anonymous · Answer

Sorry, have a nice day.

anonymous · Answer

Thank you very much, you too! I will be back with more questions next homework. lol!