GeekDad reader Tom Heck sends us some cool video of the trebuchet kit he and his son assembled and tested together. I love that the counterweight is a dumbell! Check out the video in the Extended ...

Margarete Anne Lott, Elizabeth McKinney and Mallory Cutrer check out the operation of a counterweight trebuchet in Justin Davenport's Advanced Placement Physics course at West Feliciana High School.