# Is it possible to use the center of gravity to balance a bird toy?

#### Benjamin_harsh

Homework Statement
Is it possible to use center of gravity to balance bird toy ?
Homework Equations
Is it possible to use center of gravity to balance bird toy ?
Here is the picture where person balancing a toy bird with using center of mass.

I am bored with center of mass. I want to try same experiment with center of gravity. Is it possible to use center of gravity to balance bird toy ?

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#### haruspex

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Problem Statement: Is it possible to use center of gravity to balance bird toy ?
Relevant Equations: Is it possible to use center of gravity to balance bird toy ?

Here is the picture where person balancing a toy bird with using center of mass.

View attachment 245076

I am bored with center of mass. I want to try same experiment with center of gravity. Is it possible to use center of gravity to balance bird toy ?
What is the difference between centre of gravity and centre of mass? There is one, although it would make no difference in this context.

#### Benjamin_harsh

There is one, although it would make no difference in this context.
Is it possible to use center of gravity to balance bird toy or not?

#### BvU

Homework Helper
I am bored with center of mass
That is a serious affection !

A remedy might be to spend a bit more time on R & R , socialize and such.

In extreme cases of brilliance, stepping up from center of mass to e.g. tensor of moment of inertia can be diverting

#### BvU

Homework Helper
Is it possible to use center of gravity to balance bird toy or not?
As haru says: ain't no difference, so a definite 'Yes'

#### Benjamin_harsh

As haru says: ain't no difference, so a definite 'Yes'
I think center of gravity changes but not center of mass. I think we can balance things by center of gravity not with center of mass.

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#### Benjamin_harsh

Under what circumstances?
Near black holes etc. Where we balance things with center of gravity and also where center of mass is completely useless. Shuttlecock flips with center of gravity not with center of mass.

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#### jbriggs444

Homework Helper
Shuttlecock flips with center of gravity not with center of mass.
No.

Have you ever played badminton on the moon?

#### Benjamin_harsh

Have you ever played badminton on the moon?

#### jbriggs444

Homework Helper
To suggest that gravity is not the only factor affecting a shuttlecock.

#### haruspex

Homework Helper
Gold Member
2018 Award
Shuttlecock flips with center of gravity not with center of mass.
I don't understand what you are saying here. Please explain in detail. In particular, please explain what you think the difference is between the two centres.

"Is it possible to use the center of gravity to balance a bird toy?"

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