When a plane is flying, lift and weight must be balanced to keep the plane level and maintain altitude. Lift is generated by the wings and opposes the force of weight, which is the gravitational force acting on the plane.
If the object doesn't move, the forces HAVE TO be balanced. There is no other way.
The forces must be greater in one direction than in the opposing direction, and therefore, must be sufficient to overcome inertia, friction, and any other force that opposes a change in speed.
Balanced forces are equal in size and opposite in direction, resulting in no change in an object's motion. Unbalanced forces are not equal in size or not opposite in direction, causing an object to speed up, slow down, or change direction.
In order for an object not to move, the forces on it must be balanced. This means that the net force acting on the object is zero, resulting in no acceleration and thus no movement.
For a plane to stay at the same altitude, lift force from the wings must be equal to the weight of the plane. Lift force is generated by the wings due to the flow of air over them, while weight is the force acting downwards due to gravity. When these two forces are equal, the plane remains at a constant altitude.
Gravity and lift.
if the net force is balanced then it has to be zero
The sum of the forces must be zero. More precisely, "the forces on an object are balanced" means the same as "the vector sum of the forces acting on an object is equal to zero".
The sum of the forces must be zero. More precisely, "the forces on an object are balanced" means the same as "the vector sum of the forces acting on an object is equal to zero".
The forces must be balanced; the forces must be equal in size and opposite in direction. (Net force must equal zero).
something
If the object doesn't move, the forces HAVE TO be balanced. There is no other way.
The forces must be balanced; the forces must be equal in size and opposite in direction. (Net force must equal zero).
The forces must be greater in one direction than in the opposing direction, and therefore, must be sufficient to overcome inertia, friction, and any other force that opposes a change in speed.
Balanced forces are equal in size and opposite in direction, resulting in no change in an object's motion. Unbalanced forces are not equal in size or not opposite in direction, causing an object to speed up, slow down, or change direction.
Zero
In that case, the sum of all forces must be zero.