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first_newbie 16-01-2016 15:59

CoM?
 
What is CoM? Center of M.......(mechanics?)

nighterfighter 16-01-2016 16:01

Re: CoM?
 
Center of Mass

first_newbie 16-01-2016 21:10

Re: CoM?
 
What is the difference between this and CoG?

pmangels17 16-01-2016 21:20

Re: CoM?
 
Quote:

Originally Posted by first_newbie (Post 1525099)
What is the difference between this and CoG?

For any reasonably sized object, nothing. It really only comes into play in absolutely massive objects where different portions of the object are being pulled differently by gravity (we are talking planet sized here). The Center of Mass is essentially where the mass would be if the object was a point mass, the Center of Gravity is where the gravity force would act on the object if it was only at one point.

Christopher149 16-01-2016 21:31

Re: CoM?
 
Quote:

Originally Posted by pmangels17 (Post 1525104)
For any reasonably sized object, nothing. It really only comes into play in absolutely massive objects where different portions of the object are being pulled differently by gravity (we are talking planet sized here). The Center of Mass is essentially where the mass would be if the object was a point mass, the Center of Gravity is where the gravity force would act on the object if it was only at one point.

Or for artificial satellites via gravity-gradient stabilization.

pmangels17 16-01-2016 21:37

Re: CoM?
 
Quote:

Originally Posted by Christopher149 (Post 1525109)
Or for artificial satellites via gravity-gradient stabilization.

Whoa I didn't even think about that, that's some pretty cool science. However, for the purpose of FRC there is exactly zero difference.

MrForbes 16-01-2016 21:47

Re: CoM?
 
Center of Mass sounds modern...Center of Gravity is what us old folks say.

:)

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