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Rights: © Copyright 2013. University of Waikato. All rights reserved. Published 21 June 2007 Size: 16 KB Referencing Hub media

Different classes of levers are identified by the way the joint and muscles attached to the bone are arranged.

For the Class 1 lever the pivot lies between the effort and load. A see saw in a playground is an example of a Class 1 lever where the effort balances the load.