The figure shows a box of dirty money $($mass $m_1=2\mathrm{.}9kg)$ on a frictionless plane inclined at angle ${}_1=40.$ The box is connected via a cord of negligible mass to a box of laundered money $($mass $m_2=2\mathrm{.}3kg)$ on a frictionless plane inclined at angle ${}_2=58.$ The pulley is frictionless and has negligible mass. What is the tension in the cord?

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