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Mathematics 12 Online
OpenStudy (anonymous):

A thin wire has the shape of the first-quadrant portion of a circle centered at the origin with radius a, and has density p(x,y) = kxy (k a constant). Find the mass and center of mass of the wire. Can I do a line integral here? And in two dimensions? I figured I could parametrize with x=acost and y=asint , 0

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