DHS 13.3 - Option 20. Decisions Ryabushko AP

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Uploaded: 30.11.2016
Content: 20v-IDZ13.3.doc (128 kB)

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

1.20. D: x ≥ 0, y ≥ 0, x2 + y2 = 4, μ = 4 - x2

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

2.20. D: x2 + y2 + 2ax = 0, x2 + y2 + ax = 0, y ≤ 0, Oy

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

3.20. V: x = 5√y2 + z2, x = 20

4. 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.

4.20. V: 2z = x2 + y2, x2 + y2 = 4, z = 0, Oz

Additional information

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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