2. Write the difference between centre of gravity and centre of mass of a body ?
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center of gravity is the point through which the gravitational force acts on the body
while the center of mass is the point where all the mass of the body is supposed to be concentrated
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❤.CENTRE OF MASS :
- This is the point at which entire mass of the body is supposed to be concentarted.
- Centre of mass is independent of acceleration due to gravity.
- It may or may not lie inside the body.
- This concept is useful while dealing with motion of body.
❤.CENTRE OF GRAVITY :
- This is the point at which the weight of the body acts.
- Centre of gravity depends upon acceleration due to gravity.
- It always lie insdie the body.
- This concept is useful while dealing with stability of body
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