(Solved): Three 77.9 g masses are connected in a triangular shape by massless rigid wires as shown in the firs ...

Three $77.9\mathrm{g}$ masses are connected in a triangular shape by massless rigid wires as shown in the first image (which is not drawn to scale). The coordinates of each mass are given in centimeters. Mass A is located at $(0,0)$, mass B is at $(15.2,18.5)$, and mass $\mathrm{C}$ is at $(17.3,12.4)$. Find the $x$ - and $y$-coordinates of the center of mass of the triangular object. $x_{\mathrm{cm}}=$ $\mathrm{cm}$ Two more $77.9\mathrm{g}$ masses are connected by a straight piece of wire and affixed to the original configuration as shown. The coordinates of mass D are $(0,?26.6)$ and the coordinates of mass $\mathrm{E}$ are $(0,26,6)$. Find the $x$ - and $y$-coordinates of the new center of mass of the combined object. Two more $77.9\mathrm{g}$ masses are connected by a straight piece of wire and affixed to the original configuration as shown. The coordinates of mass D are $(0,?26.6)$ and the coordinates of mass $\mathrm{E}$ are $(0,26.6)$. Find the $x$ - and $y$-coordinates of the new center of mass of the combined object.