Question

When we apply force on a heavy object, but the object remains at rest, then who balances the force exerted by us, explain through the diagram.​

Answer 1

Answer:

You know the Newton's third law: Every action has a equal and opposite reaction. When we apply force on a heavy object, but it does not budge from its place, there is a force called friction that neutralises it. Friction is of three types: Static friction, Limiting friction and kinetic friction. Limiting friction is the maximum friction a surface can offer for a certain amount of mass. So, limiting friction becomes uN, where u is the coefficient of friction of the surface and N the Normal Reaction of the body. So, if the force applied by you is less than the limiting friction offered by the surface, the frictional force becomes equal to the force you applied in the opposite direction and thus the object does not budge.

Hope this answered your query well.