* Work = Force x Displacement
* Force: The push or pull applied to an object.
* Displacement: The distance an object moves in the direction of the force.
Examples:
* Pushing a wall: You might push a wall with all your might, but the wall doesn't move. You're applying force, but because there's no displacement, you're doing no work.
* Holding a heavy weight: Holding a heavy weight still requires you to exert force to counteract gravity. However, since the weight isn't moving, you're not doing any work.
* Friction: Friction is a force that opposes motion. If you push a box across a rough surface, friction acts against your force. If the box doesn't move, you're applying force but not doing work because there's no displacement.
Key Takeaway:
Work is only done when a force causes an object to move in the direction of that force.
