Relation between centre of mass and center of gravity?

Click For Summary
SUMMARY

The center of mass (CM) and center of gravity (CG) are identical in a uniform gravitational field, such as that experienced on Earth. For objects near the Earth's surface, where gravitational acceleration (g) is approximately 9.81 m/sec², the CM and CG coincide, meaning they occupy the same point in space. This relationship holds true for most practical scenarios, particularly when considering objects of negligible height compared to the Earth's radius.

PREREQUISITES
  • Understanding of basic physics concepts, specifically mechanics.
  • Familiarity with gravitational forces and their effects on objects.
  • Knowledge of the definitions of center of mass and center of gravity.
  • Basic mathematical skills for applying gravitational equations.
NEXT STEPS
  • Research the differences between center of mass and center of gravity in non-uniform gravitational fields.
  • Explore the implications of varying gravitational fields on CM and CG using simulations.
  • Learn about the calculation methods for determining center of mass in complex shapes.
  • Investigate real-world applications of CM and CG in engineering and physics.
USEFUL FOR

Students studying physics, educators teaching mechanics, and professionals in engineering fields who require a clear understanding of the relationship between center of mass and center of gravity.

manoj mishra
Messages
3
Reaction score
0

Homework Statement


What is the Relation between center of mass and center of gravity, please compare with simple example. Bco'z i am very confused about it


Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
In a non zero uniform gravitational field, they are the same. An oject on planet Earth has the same cm as cg, neglecting any insignificant changes in g for even extremely tall objects (g is assumed constant at 9.81 m/sec^2 near Earth's surface).
 

Similar threads

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