Question

What force is the sum of all the forces that act upon an object

Answer 1

Answer:

Net force or resultant force

Explanation:

When a  number of forces act in different directions on an object.We know that force is a vector quantity so it has both magnitude and directions.

When all forces act upon an object cancel out to each other.Then the sum of forces is zero.The sum of forces is called net force or resultant force.Then , we say resultant force act upon an object is zero.If the forces are unbalanced then the resultant force cause an acceleration of the object.

Suppose $F_1,F_2,F_3$ act upon an object in the same direction, then the resultant force

$\vec{F}=\vec{F_1}+\vec{F_2}+\vec{F_3}$

Hence, the net force or resultant force is the sum of all the forces that act upon an object .

Answer 2

The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out