Question

In the real world, it is difficult to find a situation where no forces are acting on an object. But by applying additional forces, a condition can be achieved where the net force on the object is zero. Explain with the help of an example.

Answer 1

A situation of zero net force occurs when all the forces acting on an object are perfectly balanced.

For instance, consider a box being pushed along a floor. The force of friction acts in the opposite direction to the motion. If the box is pushed forward with a force equal to the frictional force, both forces cancel each other out. As a result, the net force on the box becomes zero, and according to Newton’s First Law of Motion, the box continues to move with a constant velocity.