gravity and normal force (assuming presence of a gravitational field)
Two forces acting in opposite directions are called balanced forces. When balanced forces act on an object, the object's motion remains constant or remains at rest.
When two forces act on an object in opposite directions, the net force is the difference between the two forces. The object will accelerate in the direction of the larger force. If the forces are equal in magnitude, the object will remain at rest or continue moving at a constant velocity.
When two forces acting on an object are equal in magnitude but opposite in direction, the condition is called equilibrium. This means that the object is either at rest or moving at a constant velocity.
When two forces of equal magnitude act in opposite directions on an object, it is called balanced forces. This results in no change in the object's motion.
Two - forces act in pairs. If object "A" acts on object "B", the object "B" will also act on object "A". In many practical situations, there may be additional forces involved. For example, if an object is at rest despite the fact that a force acts on it, then it is obvious that an additional force acts on the same object, and in the opposite direction. In such cases, there are at least four forces involved, since according to Newton's Third Law, there must be an opposite force for each of these two forces. (Note that in Newton's Third Law, the two forces act on DIFFERENT objects, so the two forces that hold an object in balance do not quality as a pair of forces according to Newton's Third Law.)
When two forces act in the same direction on an object, the forces will add together to create a stronger net force. This will result in an acceleration of the object in the direction of the forces.
When two forces act in opposite directions on an object, they create a net force that is the difference between the two forces. The object will accelerate in the direction of the greater force. If the two forces are equal in magnitude, the object will remain stationary or continue moving at a constant velocity.
Two forces counteract each other when they have the same magnitude but act in opposite directions. This results in a net force of zero, causing the object to remain at rest or move at a constant velocity.
No acceleration occurs - if stationary, it does not move, if moving, it continues its original velocity (speed *and* direction).
Two forces that act on an object in water are buoyant force, which pushes the object upwards, and gravity, which pulls the object downwards.
The two types of push forces are tension and compression. Tension forces act to pull an object outward, while compression forces act to push an object inward.
balanced Forces