Question

if 22.5 metres of a uniform iron rod waves 85.5 kg what will be the length of 22.8 kg of the same road​

Answer 1

mass per unit length

$\frac{85.5kg}{22.5m} = 3.8kg \: per \: metre \\ length \: of22.8 \: kg \: rod \\ = \frac{22.8kg}{3.8kg \: per \: meter} \\ length \: of \: 22.8kg \: rod \: is \: 6metre$

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