Three rods of the same mass are placed as shown in the figure. Calculate the coordinates of the centre of mass of the system.

Answer

`((a)/(3),(a)/(3))`

Explanation

`x_(cm) = ((M xx (a)/(2)) + (M xx 0) + (M xx (a)/(2)))/(M + M + M) = (a)/(3)`
`y_(cm) = ((M xx 0) + (M xx (a)/(2)) + (M xx (a)/(2)))/(M + M + M) = (a)/(3)`