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I have to rearrange the equation:

$$T=2\pi \sqrt{\frac{m}{k}}$$

To find the spring constant $k$.

The answer I got is $\frac{T^2 - m}{ 4\pi^2}.$

Is this correct ?

1 Answers 1

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$$T=2\pi \sqrt{\frac{m}{k}}$$ $$\frac{T^2}{4\pi^2}=\frac{m}{k}$$

$$\frac{k}{m}=\frac{4\pi^2}{T^2}$$

Are you able to solve for $k$?

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    K = (4pi$^2$m) / T$^2$. Is this correct ? – 2017-01-01
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    yes, you are right. can you spot the error in your initial working? it is important to learn from previous mistakes. =) – 2017-01-01
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    Yes I have thank you (: – 2017-01-01