Wheel momentum Walter Lewin.wmv

The Trebuchet Listen Now Download as mp3 Part 1,2 from the show Archaeology - The Science of History What you Need What to do A trebuchet works a bit like a big see-saw and the first job is to make the arm of the see-saw. Now push the biro through the both sides of the card arm, about a quarter of the way along from the widest end. Make 2 small holes in the cardboard on the centreline, one at each end. What may happen You should find that after a few adjustments the trebuchet can throw its projectile a surprising distance. Why does it happen? A trebuchet basically works like a see-saw. A trebuchet basically works in this way, with a slight complication of the sling. Real trebuchets would normally hurl a 100kg stone 300m but some of them were built to launch 300kg or even 800kg rocks several hundred metres. Dave Ansell Multimedia Related Content

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