Define first class lever,second class and third class (for class 5)
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a first class lever, the fulcrum is located between the input force and output force. In a second class lever, the output force is between the fulcrum and the input force. In a third class lever, the input force is between the fulcrum and the output force.
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Other examples of first class levers are pliers, scissors, a crow bar, a claw hammer, a see-saw and a weighing balance. ... Nutcrackers are also an example of a second class lever. Third class lever. With third class levers the effort is between the load and the fulcrum, for example in barbecue tongs.
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