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To turn the screw we have been turning a wheel attached to the top of the screw.
- Discuss with your partner as many possible reasons why they used a wheel
instead of a screw driver to turn the screw. Record your list of reasons
in your lab packet.
Data Collection
The size of the wheel can be changed by dragging the outside
of the wheel.
Leave the thread density the same as you test several size wheels.
The wheel radius can be changed from a 50 cm radius to as large as a 100 cm
radius.
- With your partner, predict what changes might occur when you adjust the
radius.
- Record your predictions in your lab packet.
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Select a wheel size and record the effort applied, distance lifted
and wheel radius in your lab packet.
- Repeat this test using at least 4 different radii.
- Record data from each test before going on.
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