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Use these activities to explore how moveable pulleys reduce the force needed to raise an object. |
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| Activity 1 |
| This activity introduces the concept of moveable pulleys. Audio instructions explain how the activity is used. The mass used in the activity (as well as the force of gravity) can be altered at the top of the page. Be sure to click the “why” buttons to have the systems explained. |
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| Activity 2 |
| This activity expands on a students knowledge by comparing three systems used to decrease the input force necessary to hoist a weight. This activity behaves in a similar fashion to Activity 1. |
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| Activity 3 |
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This activity compares two uses of pulleys – decreasing input force versus altering the direction of an input force. This activity behaves in a similar fashion to Activity 1. |
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| Developed with Laura Williams, 2006 |
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