DHS 13.3 - Option 4. Decisions Ryabushko AP

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• Calculate the mass of the D heterogeneous plate, given the limited lines, if the areal density at each point μ = μ (x, y)

1.4. D: x2 + y2 = 4x, μ = 4 - x

• Calculate the static moment of a homogeneous plate the D, limited data lines, with respect to said axis, using polar coordinates.

2.4. D: x2 + y2 + 2ax = 0, x + y ≥ 0, Ox

• Calculate the coordinates of the center of mass of a homogeneous body, occupying the area of the V, bounded by said surfaces.

3.4. V: z = 2√x2 + y2, z = 8

• Calculate the moment of inertia with respect to said homogeneous body axes, occupying the area of the V, the limited data surfaces. body density δ taken equal to 1.

4.4. V: x = y2 + z2, x = 9, Ox

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