The Cretaceous Playground

The design has a LOT of simple machines like levers, pulleys, wedges, and more! It took me 26 tries to get it working. The part I liked the most was the two falling dinosaurs attached to the string that causes something to move. The hardest machine in this design was the little catapult because every time I put the ball on the U shaped holder, It changed the aim for the block. I noticed that when the ball hit the table, it didn't land on the lever, but it had enough force to shake the table ( a big wedge ) so the other ball can hit the toy dinosaur. I had a TON of fun building the design.