Problems How do surfaces of a ramp with differing frictions affect the amount of work required to move an object up the ramp? Which surface will require.

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Presentation transcript:

Problems How do surfaces of a ramp with differing frictions affect the amount of work required to move an object up the ramp? Which surface will require the most work to move the block up the ramp? How does the slope of a ramp affect the work required to move up the ramp?

Hypotheses…

Summary Questions 1.What forces are acting on the block as it is moving up and down the ramp? 2.Which surface took the most work to move the block across? Overall, what affect does friction have on the work required to move the block? 3.What effect (if any) does gravity have on moving the block up and/or down the ramp? 4.Compare your data with another group’s. What affect does mass have on work? 5.What type of friction had to be overcome to get the block to start moving? 6.What could you have done to the block itself to decrease the amount of work required to move it up the surface of the friction board? 7.What could you have done to the surfaces of the friction board to decrease the amount of work required to move the block up the surface? 8.Does it require more work to lift the block vertically or drag it up the friction board? 9.For some work readings, you may have found 0 work done when moving down the ramp. Was no work actually done? Explain.