Jupiter's Equatorial Rotation Period

  • Context: Graduate 
  • Thread starter Thread starter hfenton
  • Start date Start date
  • Tags Tags
    Period Rotation
Click For Summary
SUMMARY

The discussion centers on calculating Jupiter's equatorial rotation period at which the centrifugal force exceeds gravitational force, potentially leading to the planet's disintegration. The user proposes using the inequality Fg = GM/R^2 and Fc = (4(pi^2)R) / P^2 to derive the rotation period. By substituting Jupiter's radius (R = 7.14 x 10^7 m) and mass (M = 1.9 x 10^27 kg), the user calculates a critical rotation period of approximately 7.39 minutes, significantly shorter than Jupiter's current rotation period of 590.5 minutes. The approach is mathematically sound and highlights the dramatic difference in rotational dynamics.

PREREQUISITES
  • Understanding of gravitational and centrifugal forces
  • Familiarity with Newton's law of gravitation
  • Basic knowledge of rotational dynamics
  • Proficiency in algebraic manipulation of inequalities
NEXT STEPS
  • Research the implications of centrifugal force on planetary stability
  • Study the mathematical derivation of gravitational force equations
  • Explore the concept of Roche limit in celestial mechanics
  • Learn about the physical characteristics of gas giants like Jupiter
USEFUL FOR

Astronomers, astrophysicists, and students studying planetary science who are interested in the dynamics of celestial bodies and their rotational characteristics.

hfenton
Messages
5
Reaction score
0
How would I find Jupiter's equatorial rotation period when it begins to tear the planet apart?

Is it true that if the centrifugal force is greater than the gravitational force the material can be torn apart?

If this is right, can I just set up an inequality for the centrifugal force > gravitational force

Fg = GM/R^2 Fc = (4(pi^2)R) / P^2

and then just solve for P throughout the inequality...

P > sqrt[ (4(pi^2)R^3)/ GM) where R(Jupiter) = 7.14*10^7 and M (Jupiter) = 1.9*10^7

If I do this, I will get a rotation period of 7.39 minutes. I am wondering if the way I went about the problem is right. As far as Jupiter's current rotational period of 590.5 mins, the period at which it would be torn apart is nearly 80x shorter. Any other suggestions for doing this problem?
 
Astronomy news on Phys.org
Sounds reasonable, what's the problem?
 
I just am never very confident with my answers. Thanks for responding though!
 

Similar threads

  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
9K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 8 ·
Replies
8
Views
4K
  • · Replies 7 ·
Replies
7
Views
2K
Replies
5
Views
2K
Replies
2
Views
2K
  • · Replies 10 ·
Replies
10
Views
5K
  • · Replies 1 ·
Replies
1
Views
1K