Picking up a sheet of paper . . . work done with small force Picking up a glass of water . . . work done with moderate force Picking up a huge boulder . . . work done with a great tremendous force ================================= Standing still . . . Holding your tongue out as far as it will go . . . Holding your arm over your head for 3 days . . . Holding a huge boulder motionless over your head . . . Pushing on a brick wall . . . Pushing as hard as you can against a truck with the wheels locked . . . . . . . . No work done at all, because the force doesn't move through a distance.
Work done = (force) times (distance)
If the force doesn't move, then the distance is zero, and the work done is zero.
