An engineer is testing a model lever system with three loads suspended from a light horizontal beam pivoted on a triangular support as shown in the diagram.
What happens to the beam when it is released from rest in the horizontal position?
It rotates clockwise with a net moment of 6.0 N m6.0\text{ N m}6.0 N m.
It rotates anti-clockwise with a net moment of 6.0 N m6.0\text{ N m}6.0 N m.
It rotates anti-clockwise with a net moment of 12.0 N m12.0\text{ N m}12.0 N m.
It rotates clockwise with a net moment of 30.0 N m30.0\text{ N m}30.0 N m.