OT: The 10th Demention

[Suicide Junkie]

You don't have to expend energy to apply a force. The spring in your ballpoint pen (the clicky kind) is always exerting force on the clicker, but that dosen't in itself mean that the pen is mightier than the sword.

Change in energy = Work = Force (dot) Distance
(Dot product of the vectors) this is the same as simple multiplication if the force and movement are in the same direction. (Negative if they're in opposite directions, and zero if they are perpendicular)

No movement means no transfer of kinetic energy regardless of the force applied.