please could i have help with the question attatched

it is about centre of gravity.

thanks

Printable View

- Dec 2nd 2008, 07:58 AMbandy1989structural mehanics help needed!! - centre of gravity
please could i have help with the question attatched

it is about centre of gravity.

thanks - Dec 2nd 2008, 08:19 AMvincisonfire
Cut your figure into two pieces. (a square and a triangle)

You can easily find the coordinates of the center of mass of the square using symmetry arguments.

You can find the coordinates of the center of mass of the triangle using the definition of the mean

$\displaystyle c_x=\frac{\int x f(x) dx}{\int f(x) dx}$

$\displaystyle c_y=\frac{\int y f(y) dy}{\int f(y) dy}$

Then you can find the center of mass of the whole thing with

$\displaystyle *MR = m_1r_1+m_2r_2 $*r being the vectors of position. - Dec 2nd 2008, 08:21 AMbandy1989thanks
thanks alot thats a big help.