Orbital radius vs period question

Click For Summary
SUMMARY

The relationship between a satellite's orbital radius and its period is governed by Kepler's Third Law of Planetary Motion. Specifically, if the orbital period is increased to 8T, the new orbital radius must be 4R. This conclusion is derived from the formula T² ∝ R³, which indicates that the square of the period is proportional to the cube of the orbital radius. Therefore, to achieve an increase in period, the orbital radius must be adjusted accordingly.

PREREQUISITES
  • Understanding of Kepler's laws of planetary motion
  • Basic knowledge of centripetal force and gravitational force
  • Familiarity with mathematical relationships involving exponents
  • Ability to manipulate algebraic equations
NEXT STEPS
  • Study Kepler's Third Law of Planetary Motion in detail
  • Explore the derivation of the relationship between orbital radius and period
  • Learn about centripetal force and its application in orbital mechanics
  • Investigate real-world applications of satellite orbits and their periods
USEFUL FOR

Students studying physics, particularly those focusing on orbital mechanics, as well as educators and anyone interested in the mathematical relationships governing satellite motion.

cheeselover87
Messages
2
Reaction score
0

Homework Statement


a satellite has period T and orbital radius R. If you wish to increase the period to 8T what must the new orbital radius be? (answer is 4R, I just don't know how to get it)


Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
First think of the relationship between orbital radius and the period.

(Centripetal force = gravitational force of attraction)
 

Similar threads

Replies
10
Views
2K
Replies
1
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 30 ·
2
Replies
30
Views
2K
Replies
3
Views
2K
Replies
2
Views
926
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K