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December 18, 2014

December 18, 2014

Posted by **mightymouse** on Sunday, March 22, 2009 at 9:03pm.

ë = 50.0 g/m + 21.0x g/m2

(a) What is its mass?

(b) How far from the x = 0 end is its center of mass?

I think you would plug in the 39cm for the x in the equation, but change it to meters first of course. The problem is how do you just get it in grams then because the units you get are g/m. I'm not sure how to even start with the center of mass.

- physics -
**Count Iblis**, Sunday, March 22, 2009 at 9:32pmYou need to compute the integral of the linear density from x = 0 to x = 39 cm to obtain the mass.

The center of mass is the integral of the linear density times x from x = 0 to x = 39 cm, divided by the mass.

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