Lever of the first order:See-Saw:: ::Bottle opener( Correlate the following)
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the levers of the 1st order are those
which have the fulcrum between the effort and load.
See- Saw is a lever of 1st order, as it's fulcrum presents right in the middle..
bottle opener is a second class lever as its' fulcrum present in the opposite side of the effort..and the load is present right in the middle.
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rci-wjtd-soj...ins.ta friends?
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