AP Physics B: Centripetal Force and Gravity

Click For Summary
SUMMARY

The discussion focuses on calculating the mass of two stars in orbit around their center of mass, where the mass relationship is defined as 2m1=5m2 and the orbital period is 120Ms. The gravitational force equation F=GmM/r² is utilized to derive the necessary calculations. The distance between the stars is specified as 1400Gm, which is crucial for determining the mass of the larger star. Participants express confusion regarding the application of concepts such as reduced mass and Kepler's Laws in solving the problem.

PREREQUISITES
  • Understanding of gravitational force equations, specifically F=GmM/r²
  • Knowledge of two-body problems in astrophysics
  • Familiarity with Kepler's Laws of planetary motion
  • Concept of reduced mass in orbital mechanics
NEXT STEPS
  • Study the derivation and application of Kepler's Third Law
  • Learn about the concept of reduced mass and its significance in two-body systems
  • Explore gravitational force calculations in astrophysics
  • Investigate the relationship between orbital period and mass in binary star systems
USEFUL FOR

Astronomy students, astrophysicists, and educators seeking to deepen their understanding of centripetal force, gravitational interactions, and orbital mechanics in binary star systems.

stonecoldgen
Messages
108
Reaction score
0

Homework Statement


Two stars of mass m1 and m2 are in orbit around their center of mass. If 2m1=5m2, and their orbital period is 120Ms, calculate the mass of the larger star, given that the distance between their centers is 1400Gm.


Homework Equations


F=GmM/r2


The Attempt at a Solution


I don't even know what to put as mass of the centripod, i kneed serious help
 
Physics news on Phys.org
What have you learned about two-body problems? Reduced mass? Kepler's Laws?
ehild
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
Replies
2
Views
1K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 7 ·
Replies
7
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
6
Views
2K
Replies
8
Views
4K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K