Hello everyone, In my physics class, we need to build a machine that has to hold an egg and move across two meters on a rope as fast as possible. There are some rules to follow: - The machine must not be bigger than 25 cm long and 50 cm large. As you can see there is no height limit. - No part of the machine must touch the ground or the wood that holds the rope. - We can't push the machine. - The egg must be over the rope. - These are forbidden: machine that can cause injuries, gas under pressure, chemical reactions, heat (flames), electricity, batteries, engines and lasers. - The rope will be a 1/4 inch yellow rope. - The machine must make it in less than 30 seconds. That's it for the rules. Now lets see how the rope will be. On the first round, the rope will be horizontal. For the second round, the rope will have an angle of 20 degrees(going up). For the third round, the rope will have an angle of 45 degrees. Well thats about it. The attachment is a zip containing an image explaining how the rope and stuff will be set up. Thank you a lot for helping me, Julien.