The resultant.
Coplanar or not, the two conditions for equilibrium are:The sum of all forces must be zeroThe sum of all torques must be zero.
Just area. Since there is no available term for the sum of the areas of all surfaces of a figure, we call that area of the "irregular" figure.
the sum
A sum.
discount
Force is a vector, and so the sum of all forces acting on an object is a vector sum.
In that case, the sum of all forces must be zero.
The vector sum of all of the individual forces in a balanced group of forces is zero. The vector sum of all of the individual forces in an unbalanced group of forces isn't.
"Balanced" means that the sum of all forces acting on an object is zero."Unbalanced" means that the sum of all such forces is NOT zero. (The "sum" refers to a vector sum.) An unbalanced force will result in an acceleration; a balanced force won't.
Balanced: the vector sum of all forces on an object is zero. Unbalanced: this sum it is not zero.
I'd call it the resultant, but "net force" is a good name too.
When the (vector) sum of all forces equal zero.
No, the magnitude of the resulting force when forces are combined is at MOST equal to the sum of forces, this is when they are all in the same direction. Else its magnitude will always be less than the sum of magnitudes of the individual forces involved (some forces will be oposing or "fighting" others).
For equilibrium, two conditions have to be met:* The sum (vector sum) of all forces acting on the object has to be zero (otherwise, it will start to accelerate). * The sum of all torques acting on the object has to be zero (otherwise, it will start to rotate).
the sum of all forces acting on an object should be equal to zero the sum of all forces acting on an object should be equal to zero
Net force.
Any force will do, as long as it's an unbalanced force (the sum of all forces acting on the object must not be zero).