Define the term 'work input' and 'work output' in relation to a machine.
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Work Input : The work done on a machine by the effort (input force) is called work input.
Work Output : The work done by the machine on the load is called work output.
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What is the principle on which a machine works?
State two functions of a machine.
Explain the term mechanical advantage of a machine.
Define the term efficiency of a machine.