- If an object is at equilibrium, then the forces are balanced which means that resultant force is zero. According to F = ma, the object's acceleration also zero when force in equilibrium achieved.
An object at equilibrium is either ...
- at rest and staying at rest, or
- in motion and continuing in motion with the same speed and direction.
Object at equilibrium position. The load is static.
Force A = 3.4 N at an angle of 161 degree
Force B = 9.2 N at an angle of 70 degree
Force C = 9.8 N at an angle of 270 degree
A triangle of forces diagram showing forces are in equilibrium
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