1. What is Work?

2. Definition of Work
According to the dictionary work is defined as “exertion or effort directed to produce or accomplish something; labor, toil”

3. Definition of Work
In physics, work is defined as “a transfer of energy.” It is calculated with the formula W=Fd where W=Work, F=Force and d=distance.

4. Measuring Work We measure work in joules (J)
Remember: work is not done without motion! And you need a FORCE for motion to occur!

5. What sorts of things do we do to make work “easier”?
Making Work Easier
What sorts of things do we do to make work “easier”?

6. Simple Machines
In physics, a simple machine is a type of device that requires application of one force.
Work is done with the force applied to the simple machine causes movement.

7. Pulley A pulley is a wheel rotating on a rope or chord.
In a pulley the rope is pulled and the wheel rotates.
Examples include a flagpole and the weight sets in the fitness center.

8. Inclined Plane
An inclined plane is a flat surface often placed when needing to move a height.
Examples include ramps and loading docks.

9. Wedge Using the pointed edge an inclined plane can create a wedge.
A wedge is used to push things apart.
Wedges include axes

10. Screw An inclined plane that is wrapped around a cylinder.
A screw can be used to put things together.

11. Lever A lever is an arm that pivots on a fulcrum.
Examples include a crowbar, seesaw and the claw end of a hammer.

12. Wheel and Axel A type of lever that moves objects a distance.
The wheel turns the axel.
Examples include a water wheel or wheel on a motorcycle.

13. Sources www.dictionary.com spirit.gwu.edu
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