3) A 10.0 m long, 18.0kg bar is set so that is rotates around its center of mass. Three forces act on the bar (see diagram). 0₁-55.0°, 03-135º, F₁=20.ON, F₂=30.0 N, and F3 is unknown. If the Net Torque on the bar is 100 Nm in the clockwise direction, what must the magnitude of F3 be? 0₂ 2.50m axis d
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