Find the mass and the x-coordinate of the center of mass of the lamina occupying t region R, where R is the region bounded by the graphs of y = sin(3x), y = 0, x = 0, and x = π/3, and having mass density p(x,y) = 4y.

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Q: A wire lies along the piecewise linear curve extending from the point (4,3) to the point (18,5) to…

A: Line segment joining (4,3) to (18,5):  (x,y)=(1-t)(4,3)+t(18,5) x=4+14t; y=3+2t.        0≤t≤1   And…