# physics

posted by .

Pilots of high-performance fighter planes can be subjected to large centripetal accelerations during high-speed turns. Because of these accelerations, the pilots are subjected to forces that can be much greater than their body weight, leading to an accumulation of blood in the abdomen and legs. As a result, the brain becomes starved for blood, and the pilot can lose consciousness (''black out''). The pilots wear ''anti-G suits'' to help keep the blood from draining out of the brain. To appreciate the forces that a fighter pilot must endure, consider the magnitude FN of the normal force that the pilot's seat exerts on him at the bottom of a dive. The magnitude of the pilot's weight is W. The plane is traveling at 232 m/s on a vertical circle of radius 652 m. Determine the ratio FN/W. For comparison, note that blackout can occur for values of FN/W as small as 2 if the pilot is not wearing an anti-G suit.

## Similar Questions

1. ### Physics

A ceiling fan has two different angular speed settings: 1 = 475 rev/min and 2 = 170 rev/min. What is the ratio a1/a2 of the centripetal accelerations of a given point on a fan blade?
2. ### Physics

The Achilles tendon, which connects the calf muscles to the heel, is the thickest and strongest tendon in the body. In extreme activities, such as sprinting, it can be subjected to forces as high as 13 times a personâ€™s weight. According …
3. ### AP physics

Pilots of high-performance fighter planes can be subjected to large centripetal accelerations during high-speed turns. Because of these accelerations, the pilots are subjected to forces that can be much greater than their body weight, …
4. ### English 1

In "A Cub Pilot" what does the author mean when he says the Mississippi is "fickle"?
5. ### Physics

There are competitions in which pilots fly small planes low over the ground and drop weights, trying to hit a target A pilot flying low and slow drops a weight; it takes 1.6 s to hit the ground, during which it travels a horizontal …
6. ### Physics

A large centrifuge is used to expose aspiring astronauts to accelerations similar to those experienced in rocket launches and atmospheric reentries. a) At what angular velocity is the centripetal acceleration 10 gs if the rider is …
7. ### physics

Pilots of high-performance fighter planes can be subjected to large centripetal accelerations during high-speed turns. Because of these accelerations, the pilots are subjected to forces that can be much greater than their body weight, …
8. ### Physics

In an aviation test lab, pilots are subjected to vertical oscillations on a shaking rig to see how well they can recognize objects in times of severe airplane vibration. The frequency can be varied from 0.0190 to 38.3 Hz and the amplitude …
9. ### Physics

In an aviation test lab, pilots are subjected to vertical oscillations on a shaking rig to see how well they can recognize objects in times of severe airplane vibration. The frequency can be varied from 0.0240 to 39.1 Hz and the amplitude …
10. ### Physics

In an aviation test lab, pilots are subjected to vertical oscillations on a shaking rig to see how well they can recognize objects in times of severe airplane vibration. The frequency can be varied from 0.0240 to 39.1 Hz and the amplitude …

More Similar Questions