Unformatted text preview: ) )( ( a g k m x + = . a) Substituting the second expression into the first gives . 2 ) ( or , ) ( 2 1 2 2 2 gh a g m k mgh a g k m k + = = + b) Substituting this into the expression for x gives a g gh x + = 2 ....
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 net upward force

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