# Mass, Centroid, and Moments

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Compute the mass, centroid, and moments Ix, Iy and Io of the half-disk:

y>0, x^2+y^2<1

with density delta(x,y)=y

it is said we should know the primitive (sin(x))^n

or (cos(x))^n from Pi/2 to 0

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This shows how to compute the mass, centroid, and moments Ix, Iy and Io of the given half-disk.

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The region is , , which is upper half circle. ...

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