How to make a tissue box catapult
4. Make a stopper
Your catapult will work now, but without a stopper it won’t fire things very far. Use duct tape to attach another pencil to the first pencil over the top of the box, as shown above. That way, when the catapult reaches a certain point, the stopper pencil will hit the box, and the catapult will the hit the stopper. When the arm stops moving the item inside will keep its energy and go flying!
Published at Wed, 24 Mar 2021 09:13:00 +0000