Purpose: To determine the use of the Simple Machine called the Inclined Plane.
Objective: Upon completion of this lesson, the student will be able to calculate the
IMA (ideal mechanical advantage) and the AMA (actual mechanical
advantage) of using an inclined plane.
Materials:
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Spring scale - metric ruler- 30 cm board - a load - string
Procedure:
1.
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Using your spring scale, mass the object your teacher has given you.
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2.
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How much work would you do if you were to raise this mass 10 centimeters?
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Work = Force X Distance
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3.
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If you were to use an inclined plane 30 centimeters long to lift this same object 10 centimeters high, what would be your IMA?
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IMA = Length of plane/height of plane
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4.
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How much effort should it take to actually perform this task?
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5. Perform this task using your inclined planed.
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Length = 30 cm.Height = 10 cm.
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6.
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How much work did you do perform doing this task?
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7. What was your actual mechanical advantage using the inclined plane?
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AMA = Resistance Force/Effort Force
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8.
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Did this Simple Machine Save you work?
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Observations:
1.
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Mass =64 grams
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2.
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Work =640g/cm
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3.
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IMA= 3
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4.
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Effort = +21g
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5.
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Effort = 22g
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6.
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Work = 660g/cm
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7.
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AMA = 2.9
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8.
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No
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Conclusion:
Simple Machines do not save work but allow you to use less effort.
* Student answers may vary due to their spring scale calibration and scale.