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Formula rearrangement and scaling
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Formula rearrangement and scaling
Secondary 2
TGM Original Questions
Given \(mv=\frac{4p^2-3q}{p^2}\), express \(p\) in terms of \(m,v,q\).
If \(T^3=\frac{8\pi^2l}{g}\):
make \(l\) the subject
find the percentage increase in \(l\) when \(T\) is tripled.
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Answer:
(a) \(p=\pm\sqrt{\frac{3q}{4-mv}}\); (b)(i) \(l=\frac{gT^3}{8\pi^2}\); (ii) \(2600\%\).
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