Formula rearrangement and scaling
Formula rearrangement and scaling
Secondary 2
4 marks
TGM Original Questions
If \(T^3=\dfrac{8\pi^2l}{g}\):
- make \(l\) the subject[2]
- find the percentage increase in \(l\) when \(T\) is tripled.[2]
Assume \(g,T>0\), with \(g\) constant.
Solution:
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Answer:(i) \(l=\dfrac{gT^3}{8\pi^2}\) (ii) \(2600\%\).
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