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[" 1) An open knife edge of mass "KJ" 3"...

[" 1) An open knife edge of mass "KJ" 3"46.2M" .What "$385ms" .Wooden noor.If "],[" An open knife edges a distance is droped from a height "%" the asistance offered by "],[" the blade pertrates a distance "s" into the wood,the arerage resistance offered by "],[" the wood to the blade is ":],[[" 1) "Mg," 2) "Mg(1+(h)/(s))," (3) "Mg(1-(h)/(s))," 4) "Mg(1+(h)/(s))^(2)]]

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