When you move a chair across the floor, your push has to be stronger than the frictional force between the chair and the floor.

What’s going on physically?

When a chair is at rest, friction between its legs (or wheels) and the floor resists any attempt to start moving it.

To get the chair to actually slide, your push must be greater than this frictional force, so that there is a net force in the direction you’re pushing and the chair accelerates.

In basic physics multiple‑choice questions, the correct answer is that your push must be stronger than friction , not magnetic, normal, or tension forces.

Why friction matters so much

  • Friction comes from the contact between the chair’s feet and the floor, and it always acts to oppose motion or attempted motion.
  • The heavier the chair (for example, if someone is sitting on it), the bigger the normal force, and therefore the larger the friction you must overcome.
  • Once the chair is moving, kinetic friction still opposes motion, but you often need slightly less push to keep it moving than to start it, because static friction (starting friction) is usually larger.

Simple example story

Imagine an empty wooden chair on a rough tile floor.

At first you push gently and nothing happens—your push is weaker than the static friction holding the chair in place.

You push a bit harder, finally exceed friction, and the chair suddenly jerks forward, then slides as you keep applying force slightly above the (now smaller) kinetic friction.

So in classroom wording:

When you move a chair across the floor, your push must be stronger than friction.

TL;DR: Your push must be greater than the frictional force between the chair and the floor for the chair to move.

Information gathered from public forums or data available on the internet and portrayed here.