If the slope of $T^2$ vs. $m$ for $T = 2\\pi\\sqrt{\\frac{m}{k}}$ is 0.05, $k$ is:

University of Ilorin PHY107 2020 past question

1. $0.8\\pi^2$
2. $8\\pi^2$
3. $80\\pi^2$
4. $800\\pi^2$

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