An event at the Dome, November 29th, 2000
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The Death of
Distance: from Pythagoras to Galileo An event at the Dome, November 29th, 2000 |
Ancient Egyptians: How pulleys work
Website: pulleys
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A simple pulley |
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Move the red point (representing effort) to operate
the pulley. Compare how far the red point moves up and down with how far the
load (the black point) moves up and down. They are the
same
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A better pulley |
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Compare how far the red point moves up and down with
how far the load (the black point) moves up and down. The effort moves twice as
far as the load.
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An even better pulley |
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Compare how far the red point moves up and down with
how far the load (the black point) moves up and down. The effort moves three
times as far as the load.