anonymous
  • anonymous
If anyone knows how to solve for centroids, centers of mass, and moments of inertia...lemme know?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
ok.
anonymous
  • anonymous
single or multivariable calculus...
anonymous
  • anonymous
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.

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anonymous
  • anonymous
second one, im given a shape on a graph and rho. solve for My, Mx, and center of mass
anonymous
  • anonymous
ok, so what exactly are you having difficulty with?
anonymous
  • anonymous
im not given any functions f(x) or g(x), so how would i apply the 4 formulas
anonymous
  • anonymous
so for instance, on the first one, the center of mass, you aren't given rho(x,y) = ???
anonymous
  • anonymous
ok lemme copy and paste...sec
anonymous
  • anonymous
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.
anonymous
  • anonymous
again, this is easy cake if im given the functions (formulas ftw lol) buttt...im not so :(
anonymous
  • anonymous
ybar = 4(1) + 7(3) + 9(-2) = -13/20 xbar = 4(3) + 7(-3) +9(-2) = -27/20 total mass = 20
anonymous
  • anonymous
Mx = numerator of xbar; My = numerator of ybar. center of course is (xbar, ybar).

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