Simple Machines – Wedge

This wedge model can be used to demonstrate how a wedge can increase mechanical advantage. Easy for students to use and measure. A wedgecan be used to separate two objects or portions of an object, lift up an object, or hold an object in place. Wedges are used in everyday life, think of an ax or a door stopper. It is a triangular shaped tool. The mechanical advantage of a wedge is given by the ratio of the length of its slope to its width. What do you think will be easier if you want to lift an object? The use of a short wedge with a wide angle or a long wedge with a narrow angle? Let students try to lift the model by inserting the wedge only a little bit. Let them try it again by inserting the wedge completely, only leaving a little bit of the wedge sticking out. What was easier? Can you explain why? This model is an excellent tool for inquiry based experiments. Students create an hypothesis – what do they think will happen to the mechanical advantage when you change the length the slope? Once they have thought about the possible outcome, they can check their hypothesis by performing the experiment. This makes the model a perfect resource for hands-on science experiments. This model includes an instruction manual to facilitate both teachers and students with the use of this model.

The model is made of particle board and MDF components. The sturdy construction of the models makes it perfect for classroom use. The base of the model measures 35.0 cm (L) x 9.5 cm (W) with an adjustable height.