Trebuchet

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 1010.1 Hz, 61 cents flat of C6, the nearest tine on the comb. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap it to launch: the weight drops and the long arm flings a stone.

A trebuchet is a giant throwing machine from the Middle Ages. A long wooden arm swings on an axle, with a heavy weight on its short end and a sling on its long end. When the weight falls, the long end whips up and over, the sling swings out and lets go, and the stone flies a long way. Carpenters built them from great timbers, and the biggest could throw a stone as heavy as a person.

Tap it to launch: the weight drops, the arm swings up and the stone sails off, then the arm comes back down, ready for the next one. Today people build trebuchets for fun, to throw pumpkins in contests. With ✋ Hands-on on, pull the long end of the arm down a little to free its catch, then let go: the counterweight drops, the arm whips up and the sling flings the stone.

Made in Splashery. Its code is MIT.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.