Relation between centre of mass and center of gravity?

AI Thread Summary
The center of mass and center of gravity are equivalent in a uniform gravitational field, such as near the Earth's surface. For most objects, including tall ones, the gravitational acceleration is considered constant at approximately 9.81 m/s². This means that the center of mass (CM) coincides with the center of gravity (CG) for practical purposes. The distinction becomes relevant only in non-uniform fields or for very large objects where gravitational variation can occur. Understanding this relationship simplifies many physics problems related to balance and stability.
manoj mishra
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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


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The Attempt at a Solution

 
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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).
 
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