Recent content by Twellmann

Hi Berkeman, Thank you for your reply, but this is not a school project, even if it is for his class to enjoy. I didn't say that I haven't found anything, but more that a lot of discussions focus on getting good performance. Talks about efficiency seems to be more in the trebuchet domain, as...

TL;DR Summary: In a classic catapult the arm usually meets a cross brace that stops it and helps define the exit angle. This seems a bit wasteful. I have been thinking about making a small catapult for my sons class. In a classic catapult the arm usually meets a cross brace that stops it and...

Hi Physics Forum. Greetings from Denmark. Best Daniel Twellmann