Simple Machines – Fulcrum Balance

This fulcrum balance model is elegantly designed and easy to use by students. The sturdy construction of the fulcrum balance makes it ideal for classroom demonstrations. Study how changing the distance from the fulcrum changes the mechanical advantage. This fulcrum balance consists of a lever that is attached to the ground by a pivot. The point where the lever and the pivot connect is called the pivot point. Students can intuitively figure out the balance point for a given set of masses. If there is a heavy load on one side of the lever and a small load on the other side of the lever, how should they change the pivot point to let the lever balance? Do you need to move the heavy load closer to the pivot point, or is it the small load? What happens if you move the pivot point of a fulcrum that was in balance before you moved it? Where do you have to apply force (in other words: where do you have to add weight) to create a balance again? This model is perfect for inquiry based learning! This model comes with an instruction manual for teacher and students to facilitate in the use of the model. The base measures 22 cm (W) x 5.5 cm (L) with a height of 13.3 cm. The lever arm is 45cm long. The model is made of particle board and wooden components.