2. Assuming: $m_{HM}$ - hanging mass in kg, $r_{HM}$ - radius of the hanging mass in m, $m_r$ - mass of the ruler (meter stick) in kg, $r_r$ - radius of the ruler in m, $m_s$ -mass on the other end in kg, $r_s$ - radius of the mass on the other end in m, and g - acceleration due to gravity (9.81 m/s²) construct an equation for $\tau_{counterclockwise}$ (2 pts)