PHYSICS 1A03 Lecture Notes - Lecture 37: Chemical Energy, Whopper, Hypotenuse
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11 Apr 2018
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The everyday definition of work and the one that we use in physics are quite different from each other. When most people think about work they think of the job that they have. Although it is possible that a person might be doing the physics definition of work while at his or her job, it is not always the case. Like so many other things in physics we have to use an exact definition to really explain what work is. In fact, we have to use two definitions of work. Work happens when a force causes an object to move through a displacement. The force and the displacement must point in the exact same direction. Example 1: i am holding a 2 kg block of cheese in my hands. I walk 12 m to the other side of the room.