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Wheels at work
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Instructions for using readily available materials to make models of machines such as pulleys, windlasses, and water wheels, with suggested experiments to demonstrate their capabilities.
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Instructions for using readily available materials to make models of machines such as pulleys, windlasses, and water wheels, with suggested experiments to demonstrate their capabilities.
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"Instructions for using readily available materials to make models of machines such as pulleys, windlasses, and water wheels, with suggested experiments to demonstrate their capabilities."
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