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Year 11 Methods (Unit 1 & 2) Variation

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Question 1
192900
The mass of a steel rod varies directly with its length, so \(m=kL\), where \(m\) is the mass in kilograms and \(L\) is the length in metres. A rod of length \(4\) m has a mass of \(20\) kg. Find the constant of variation \(k\).
5
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