===== Example: Work and Friction + Ramp =====



=== Video ====
Part 1:

You want to push a 40 kg box along a floor that has a coefficient of friction of .6.

a) Calculate the expected friction force that will act against your motion. 
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Part 2:

You apply a force of 350 N for a distance of 20 m. How much work was done?
{{youtube>14D_-PQQ92M?large}}


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Part 3:

c) You soon meet an incline of 15 degrees, 6 m in height. How does the work change if you apply the same force up the incline?
{{youtube>crCXfsOyIb0?large}}


=== Four Quadrants ===


{{183_notes:examples:work_and_friction_quadrant.png}}