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Mathematics
OpenStudy (anonymous):

Ok ! i need help with finding some neat way to calculate the center of mass of half a sphere =] Thanks !!!

OpenStudy (anonymous):

Neat way? Use the normal one. Assume a disk at an x distance above the centre of width dx. Consider this your element. Can you integrate it after this?

OpenStudy (anonymous):

well, the x coordinate is on the 0 point because of the symetry i need the y part of the center of mass coordinate .. how do i express dm in terms of y ?

OpenStudy (anonymous):

|dw:1331569499534:dw|Well. At a distance x Assume a disk of width dx Use mass per unit volume. Integrate from 0 to R.

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