When is the net force on an object equal to zero?

When the object is in motion
When the object is changing direction
When the forces acting on the object are balanced
When inertia is not present

1 answer

The net force on an object is equal to zero when the forces acting on the object are balanced. This means that the sum of all forces acting on the object cancels out, resulting in no acceleration.

In this scenario, the object may either be at rest or moving at a constant velocity. Thus, the correct answer is:

  • When the forces acting on the object are balanced.