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Simple Machines Activity 3
Screw & Wheel & Axle
Wheel and Axle
To turn the screw we have ben 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
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The size of the wheel can be changed by _____________.
Leave the thread density the same as you test several size wheels.
The wheel radius can be changed from a 7 cm radius to as large as a 19 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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