Physics I / Graphical Analysis and Curve Fitting
Practice question · Estimate

Your T2T^{2} vs. LL pendulum plot has slope 4.0 s²/m. Using slope =4π2/g= 4\pi^{2}/g, compute gg in m/s². (Use π29.87\pi^{2} \approx 9.87.) Set the slider to your answer.

Estimate on a scale from 0 to 30.

Hints
  1. Rearrange: g=4π2/slopeg = 4\pi^{2}/\text{slope}.
  2. g=4×9.87/4.0g = 4 \times 9.87 / 4.0.
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9.87 (answers within ±0.3 count)

Why

g=4π2/4.09.87g = 4\pi^{2}/4.0 \approx 9.87 m/s². Note the workflow: the slope of a linearized plot, built from all data points at once, delivers the physical constant, with the scatter of points around the line giving its uncertainty for free.

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