# Physics

posted by .

A fighter pilot dives his plane toward the ground at 345 m/s. He pulls out of the dive on a vertical circle. What is the minimum radius of the circle, so that the normal force exerted on the pilot by his seat never exceeds three times his weight?

• Physics -

3mg>mv^2/r

solve for r

• Physics -

my answer was wrong.. I got 4048.47? What did you get?

• Physics -

oops. Normal force on his seat includes his weight.

3mg>mg+mv^2/r

• Physics -

So then... once you divide out the m's it would be 3g>g+v^2/r?

• Physics -

yes.

## Similar Questions

1. ### Physics

A stunt pilot of mass 55.0 kg who has been diving her airplane vertically pulls out of the dive by changing her course to a circle in a vertical plane. A)If the plane's speed at the lowest point of the circle is 95.6 m/s , what is …
2. ### physics

a jet pilot takes his aircraft in a vertical loop. a) if the jet is moving at a speed of 2000 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point …
3. ### physics

consider the magnitude of the normal force that the pilot's seat exerts on him at the bottom of a dive. The plane is traveling at 273 m/s on a vertical circle of radius 706 m. Determine the ratio of the normal force to the magnitude …
4. ### physics

A fighter pilot dives his plane toward the ground at 485 m/s. He pulls out of the dive on a vertical circle. What is the minimum radius of the circle, so that the normal force exerted on the pilot by his seat never exceeds three times …
5. ### Physics

A 84.0-kg airplane pilot pulls out of a dive by following, at a constant speed of 163 km/h, the arc of a circle whose radius is 312.0 m.
6. ### 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, …
7. ### physics

The plane is traveling at 288 m/s on a vertical circle of radius 622 m. Determine the ratio of the normal force to the magnitude of the pilot's weight. For comparison, note that black-out can occur for ratios as small as 2 if the pilot …
8. ### 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, …
9. ### 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, …
10. ### physics

Consider a plane pulling up from a downward dive. If the plane has a speed of 85 m/s at the bottom of the dive and the radius of curvature of the dive is 240 m, what is the normal force on a 78 kg pilot at the bottom of the dive?

More Similar Questions