What is meant by input work? Write down the principle of lever.
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Input work is the work done on a machine as the input force acts through the input distance.
Principle of the Lever. It has been practically found that when two equal forces acting in opposite directions, i.e., clockwise and counterclockwise, are applied to a uniform lever at equal distances from the fulcrum, they counteract each other and establish a state of equilibrium in the lever.
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The work done on the machine by the effort is called input work.
The principle of lever is: Clockwise moment of load about the fulcrum = Anticlockwise moment of effort about the fulcrum.
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