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anonymous

  • 5 years ago

If anyone knows how to solve for centroids, centers of mass, and moments of inertia...lemme know?

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  1. anonymous
    • 5 years ago
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    ok.

  2. anonymous
    • 5 years ago
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    single or multivariable calculus...

  3. anonymous
    • 5 years ago
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    multivariable i believe. 2 problems. first one, im given 3 coordinates, each one with a value m. solve for My, Mx, and the center of mass.

  4. anonymous
    • 5 years ago
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    second one, im given a shape on a graph and rho. solve for My, Mx, and center of mass

  5. anonymous
    • 5 years ago
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    ok, so what exactly are you having difficulty with?

  6. anonymous
    • 5 years ago
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    im not given any functions f(x) or g(x), so how would i apply the 4 formulas

  7. anonymous
    • 5 years ago
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    so for instance, on the first one, the center of mass, you aren't given rho(x,y) = ???

  8. anonymous
    • 5 years ago
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    ok lemme copy and paste...sec

  9. anonymous
    • 5 years ago
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    The masses mi are located at the points Pi. Find the moments Mx and My and the center of mass of the system. m1 = 4, m2 = 7, m3 = 9; P1 = (1, 3), P2 = (3, −3), P3 = (−2, −2) solve for Mx, My, and find center of mass.

  10. anonymous
    • 5 years ago
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    again, this is easy cake if im given the functions (formulas ftw lol) buttt...im not so :(

  11. anonymous
    • 5 years ago
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    ybar = 4(1) + 7(3) + 9(-2) = -13/20 xbar = 4(3) + 7(-3) +9(-2) = -27/20 total mass = 20

  12. anonymous
    • 5 years ago
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    Mx = numerator of xbar; My = numerator of ybar. center of course is (xbar, ybar).

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