Problem $2)(15$ pts$)$ Alix & Alex are working on a sculpture for their school project. The sculpture consists of two rigid rods which are connected together by strings as shown, and on which are hung several masses. They have chosen the mass $m_1=1\mathrm{.}5kg$ and lengths as follows: $l_1=0\mathrm{.}75m,l_2=1\mathrm{.}0m,l_3=0\mathrm{.}25m$ and $l_4=0\mathrm{.}50m.$ What values for masses $m_2$ and $m_3$ must they choose to ensure that the system is in static equilibrium as shown? $($This question asks you to calculate the numerical mass values in units of kg $.$ You may ignore the mass of the rods and wires.$)$