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A lamina (two-dimensional plate) with density inversely proportional to the distance from the origin, occupies the region inside the circle 2 +y? = 2y,

A lamina (two-dimensional plate) with density inversely proportional to the distance from the origin, occupies the region inside the circle 2y22y, but outside the circle 12 + y2-1. Use polar coordinates to find the centre of mass of the lamina

A lamina (two-dimensional plate) with density inversely proportional to the distance from the origin, occupies the region inside the circle 2 +y? = 2y, but outside the circle 22 + y? = 1. Use polar coordinates to find the centre of mass of the lamina.

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