Need help with gravitation problem

  • Thread starter Thread starter noname1
  • Start date Start date
  • Tags Tags
    Gravitation
Click For Summary
SUMMARY

The discussion focuses on calculating the minimum mass required for a neutron star with a radius of 17 km rotating at 50 revolutions per second to ensure that material on its surface remains in place. The formula used is M = R³W²/G, where R is the radius, W is the angular velocity (10π rad/s), and G is the gravitational constant (6.67 x 10^-11). The initial calculation yielded a mass of 7.270 x 10^25 kg, which was later corrected by the user, indicating a resolution to the problem.

PREREQUISITES
  • Understanding of angular velocity and its conversion to radians per second
  • Familiarity with gravitational physics and the concept of gravitational force
  • Knowledge of the formula for gravitational mass calculation
  • Basic proficiency in unit conversions, particularly between kilometers and meters
NEXT STEPS
  • Study the derivation and application of the formula M = R³W²/G in astrophysics
  • Explore the properties and characteristics of neutron stars
  • Learn about the effects of rotation on gravitational stability in celestial bodies
  • Investigate the implications of mass and density in stellar evolution
USEFUL FOR

Astronomy students, astrophysicists, and anyone interested in the mechanics of celestial bodies and gravitational physics.

noname1
Messages
131
Reaction score
0
Certain neutron stars (extremely dense stars) are believed to be rotating at about 50 rev/s. If such a star has a radius of 17 km, what must be its minimum mass so that material on its surface remains in place during the rapid rotation?


Attempt:

M = R³W²/G = (17000³ * (10pi)²) / (6.67x10^-11) = 7.270 x 10^25 but the answers is wrong, what am i doing wrong?
 
Physics news on Phys.org
never mind got it
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 2 ·
Replies
2
Views
9K
Replies
1
Views
3K
  • · Replies 7 ·
Replies
7
Views
2K
Replies
4
Views
15K
  • · Replies 1 ·
Replies
1
Views
1K
Replies
5
Views
2K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 6 ·
Replies
6
Views
2K