Question

What happens when two forces are applied in the same direction of the object ?
A. Net force is the addition of forces.
B. Net force is the subtraction of forces.
C. Net force is the division of forces.
D. Net force is the multiplication of forces.

Answer 1

Force is a vector quantity . It means force has direction as well as the magnitude and also follows triangle law of vector addition. Thus, when two forces are applied on an object in the same direction then by law of vector addition, the resultant is the addition of two forces.

Complete step-by-step solution:

If two forces are applied in the same direction of an object the net force is the addition of forces.
Addition of vectors
If and are the two vectors to be added , the diagram drawn above in which the tail of coincide with the head of . The vector joining the tail of with the head of is the vector sum of and .

If the direction of two vectors is the same or they are applied on a body or block in the same direction the resultant of vectors gets added.
Hence option (A) is the correct answer.
Note:-
Force is an interaction between two objects. When a block is suspended by a rope, the rope exerts a force on the block to hold it and the block exerts a force on the rope to make it tight and stretched.
According to Newton’s third law of motion ‘ If a body A exerts a force on another body B , then B exerts a force on A and the two forces acting along the line joining the bodies’. These two forces are said to be action-reaction pairs.
There are different types of forces available on our universe
Gravitational force
Electromagnetic force or ( EM force )
Force between two surface in contact
Tension in a string or a rope
Force due to a spring
Nuclear forces
Weak forces ( the kind of forces encountered when reactions involving protons, electrons and neutrons take place ).