state the principle of levers.
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it has been found by experiment that two equal forces acting in opposite directions that is clock wise and anti clock wise and applied to a uniform lever at equal distances from the fulcrum counteract each other and establish state of equilibrium , or balance , in the lever
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a lever works on the principal of moment. It states that 'the moments of load about the fulcrum is equal to the moments of the effort about the effort arm" which is equal to "anticlockwise moment = clockwise moment"
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