Homework Help: How does gravity grow through acceleration.

1. Jun 25, 2006

Arian

If I am accelerating, in space, 3000 mph every hour, how many G's do I feel?

at 10,000 mph?

2. Jun 25, 2006

Hootenanny

Staff Emeritus
Use Newton's second law and find out.

3. Jun 25, 2006

scott1

It's:
$$F=ma$$
If you don't know
(which you probally do know just wanted to make sure)

Last edited: Jun 25, 2006
4. Jun 25, 2006

Staff: Mentor

Nah, it's just a unit-conversion problem. One "G" equals 9.8 m/sec^2 (m/sec per second) or 32 ft/sec^2 (ft/sec per sec). So he needs to convert 3000 mi/hr per hr to whichever units are more convenient for him.

If he's rusty on unit conversions, he might want to do it one step at a time, starting for example with

3000 mi/hr per hr = (3000 * 5280) ft/hr per hr

5. Jun 25, 2006

Mindscrape

Why would it matter how many 'g's you feel at 10000 mph? It would be the same as at 0 mph because 'g's is a measure of acceleration not velocity.

6. Jun 25, 2006

Hootenanny

Staff Emeritus
If you look at the post he/she says 300mph per hour, which is an acceleration. However, he/she later says 10 000mph, but I think they simply forgot to add the 'per hour'
Yeah, I've realised that, I only half read the post tbh.

7. Jun 25, 2006

Janus

Staff Emeritus

8. Jun 28, 2006

Caesar_Rahil

Use Einstein's second law, F=ma

9. Jun 29, 2006

Hootenanny

Staff Emeritus

10. Jun 29, 2006

HallsofIvy

By the way, the title of this thread, "How does gravity grow through acceleration", is very misleading! "g"s are a measure of acceleration. "Gravity" does not change "through acceleration"!

11. Jun 29, 2006

J77

Yeah - this is a unit conversion question first, then simply a division by 9.8 second.

Newton's theory of genial relativity, innit :tongue:

12. Jun 29, 2006

Kurdt

Staff Emeritus
Wasn't Einstein's second law never wear the same pair of socks simultaneously?

13. Jun 29, 2006

Mech_Engineer

Uh, wow

14. Jun 29, 2006

DaveC426913

Newton, Einstein, whatever - they're all eggheads. Can't tell em apart.

You! Beer-stein! Do my homework or I'll stuff your head in the toilet!

15. Jun 29, 2006

Arian

Thank you Janus, that is what I wanted to know,
I already know f = ma.

16. Jun 30, 2006

J77

You wanted to know the answer, not how to do the question?!?! :surprised

17. Jun 30, 2006

Arian

Well, yes, If you can tell me in an understanable way, with exaples...

But with the answers I was given I will be able to deduce more answers by using simple algebra.

18. Jul 1, 2006

HallsofIvy

His point is that you specifically thanked Janus, whose answer consisted entirely of
and
which gives no explanation at all!

19. Jul 1, 2006

Arian

I don't need to know the way you got it if I can find more answers from two.

20. Jul 1, 2006

lightgrav

Arian is trying to learn how to write ...
by knowing that periods go just before Capital letters.