1. Work and Energy

2. What does work mean to you?

3. Work Work= force x distance W=F x d Unit: N-m : Joule
In physics, work has a very specific meaning. It is the action to make things change
Work= force x distance
W=F x d
Unit: N-m
: Joule

4. Work = Force x distance

5. Work …the motion has to take place parallel to the direction of the force

6. Garcon is not doing work
Work and Energy…the motion (distance) is parallel to the direction of the force
Garcon does work when he picks up the tray
but not while he
carries it around
the room
Garcon is not doing work

7. Is Atlas doing work? Atlas is staying in place Atlas is not doing work

8. Is work being done on the wall?
work may be done on the prisoner’s muscles …stretching,
squeezing them, pumping the blood through the veins..
but this is not work being done on the wall
be clear where the work goes

9. Is work being done?

10. Practice Problems