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Screw Jack - Human Lift
Purpose
To illustrate mechanical advantage.
Equipment
Screw jack, wood block, and wagon, as photographed.
Setup Time
5 min.
Images
Description
The screw jack is used to lift the back end of the wagon with several people aboard. It can easily be operated with one hand, because it has a mechanical advantage of about 420 when used with a 22 inch handle.◙
References
(PIRA unavailable.)
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See pagesb1. center of mass statics
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See pagesb2. equilibrium of forces & torques
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See pagesb3. simple machines
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See pagesb4. elasticity
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See pagesb1. center of mass statics
-
See pagesb2. equilibrium of forces & torques
-
See pagesb3. simple machines
-
See pagesb4. elasticity
Physics Lab Demos