Fulcrum is in the centre, Class 1 Lever, Class 2 Lever, Class 3 Lever, six kinds of simple machines, There are, class 1 levers, Pliers are examples of, has the fulcrum in the centre, Beam balance, an example of class 3 lever, Simple machines, Pulley, Inclined plane and Screw are all examples of, is an example of class 3 lever, is an example of class 1 lever

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