Centrifugal speed (MPH) converted to G's

[F Mills]

HI, let's save introductions till later, I'd like to get right to it.

two questions:

If a person weighs 100 lbs and is on a centrifuge spinning at 1,000 MPH, what is the G-force exerted by his body?
If a person weighs 100 lbs and is on a centrifuge spinning at 500 MPH, what is the G-force exerted by his body?

thanks in advance

 

[CWatters]

spinning at 1,000 MPH

You can't spin in "miles per hour".

 

[Buzz Bloom]

two questions:

Hi F Mills:

You need to also know the radius of motion. How far from the axis of rotation are you?

See https://en.wikipedia.org/wiki/Circular_orbit .

Regards,
Buzz

 

[F Mills]

You can't spin in "miles per hour".

Yeah, that's the problem I'm getting when googling speed to G force calculators, can you do some conversions and come up with an answer, it's over my head.

 

[berkeman]

Yeah, that's the problem I'm getting when googling speed to G force calculators, can you do some conversions and come up with an answer, it's over my head.

Welcome to the PF.

See the wikipedia page: https://en.wikipedia.org/wiki/Centripetal_force

And use F = mv^2/r. Be sure to keep your units consistent (like meters, kilograms and seconds).

What is the context of your question? Going to be flying a fighter jet soon and want to know what to expect?

 

[F Mills]

Hi F Mills:

You need to also know the radius of motion. How far from the axis of rotation are you?

See https://en.wikipedia.org/wiki/Circular_orbit .

Regards,
Buzz

3,959 miles (6,371 kilometers) one revolution per 23 hours 56 minutes and 4 seconds.

 

[F Mills]

Welcome to the PF.

See the wikipedia page: https://en.wikipedia.org/wiki/Centripetal_force

And use F = mv^2/r. Be sure to keep your units consistent (like meters, kilograms and seconds).

What is the context of your question? Going to be flying a fighter jet soon and want to know what to expect?

Calculating g force applied to 100 lb person on the equator of earth.

 

[CWatters]

Do you weigh less at the equator..

http://curious.astro.cornell.edu/ou...etween-the-poles-and-the-equator-intermediate

..the centripetal acceleration at the Equator is about 0.03 m/s2 (metres per second squared). Compare this to the acceleration due to gravity which is about 9.8 m/s2 and you can see how tiny an effect this is - you would weigh about 0.3% less at the equator than at the poles!