Question

A rope is being pulled by a girl with a force of 100 N and a boy with 80 N in opposite direction.
The net force acting on the rope is:

• A. 180 N
• B. 20 N
• C. 80 N
• D. 100 N

Answer 1

The correct option is B 20 N

Since the direction of the forces are opposite, the net force on the rope is equal to the difference of the two forces acting on the rope.
Here, the net force is equal to 100 N- 80 N , which is 20 N and the object moves along the direction of the 100 N force.