Jakejake

Hi there,

How do I calculate the centre of gravity/mass of a 2m long bar that varies from 10kg/m at the left hand end to 5kg/m at the right hand end?

Thanks

Redlemon

Homework time again? Looks like the school year has started.

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yournamehere

Yeah - seems like Tilted Knowledge has suddenly become Tilted Help Me With My Homework.

Edit: Okay - as per <b>Halx</b>, "The Tilted Knowledge forum is basically a place for you to ask for secular knowledge such as mathematics and grammar."

Therefore, I will withdraw my comment, and change it to:
"Read the damn textbook."

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Redlemon

D'OH!

OK, I'll be polite as well then.

If you have lost your textbook, you can do it through geometry, changing "mass" to "area". Basically, you end up with a triangle; figure out where the line is that gives you equal area on each side.

cliche

Does it change uniformly along its length?

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Jakejake

Yeah, sorry should've said.

Thanks for the tips guys, problem is, this is a set of questions I have been given to prepare me for my University course, and I'm not at University yet so I don't have any of the textbooks.

Redlemon

Well, if you Google using "center" instead of "centre", this NASA page is pretty cool. Again, convert "mass" to "area".

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Jakejake

OK thats great, I managed to do it using the area idea. Thanks again.