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## Homework Statement

Find the unknown mass on a lever (see-saw). I have three masses. To the right of the fulcrum, the mass is 166 g and it is 25.15 cm from the fulcrum. There are two masses to the left. One is 166 g and is 16.95 cm from the fulcrum. The unknown mass is 3.33 cm from the fulcrum. The lever is balanced on the fulcrum. This is a lab set up using a meter stick, fulcrum (5) 100 g masses, 4 weight hangers (16 g each), 3 hook masses (50 g each)

## Homework Equations

∑F=0 => ∑Fx=0 & ∑Fy=0

∑τ(about any axis)=0 => ∑τclockwise = ∑τcounter-clockwise

## The Attempt at a Solution

I'm having trouble starting the problem because the unknown mass is on the same side with a known mass. I understand how to do this for one mass on each side but throwing another variable into the equation has me stumped. I do know that to solve for this equation i have to use the information about torque. The torque is zero due to equilibrium