Albert Teen YOU ARE LEARNING:  Vector Diagrams: Equilibrium  # Vector Diagrams: Equilibrium ### Vector Diagrams: Equilibrium

A visual representation of the sum of all acting forces can show a resultant force of zero in vector diagrams.

If all of the forces acting on an object are balanced, the object is said to be in a state of ... If all of the forces acting on an object combine to give a resultant force of zero, the object is in equilibrium. The object may be stationary, or moving at a steady speed in a constant direction. Equilibrium arises when there is zero resultant force acting on an object.

In a vector diagram, if three forces form a triangle when drawn to scale and arranged from tip to tail, the forces are balanced and there is no resultant force. The object must be in equilibrium.

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A child is on a swing. At this precise moment, the child is ...

A) moving backwards. B) in equilibrium. C) moving forwards.  2

Are you able to see whether the forces are balanced from the free body diagram? Answer yes or no.  What is important when drawing a vector diagram of three forces acting upon an object? Pick all the options you think are correct.  