Basic idea : By adjusting the length of a simple pendulum, you will linearize a

Basic idea : By adjusting the length of a simple pendulum, you will linearize a graph such that the slope is local g.
Doing the experiment
Create a simple pendulum (not a general physical pendulum!) using string and a proper mass. Secure the top of the string to something so that your pendulum can swing; a pen taped to a table and extending outward is perfect. Vary the length of the string and make measurements such that you can calculate the period of your oscillator. You’ll need to measure the length of the pendulum too.
Since this experiment is arguably easier to carry out than the lab-kit version, I will be holding your submitted lab report to a slightly higher standard. Make good choices, and explain those good choices as appropriate in what you submit.
Take a picture of your pendulum oscillating. You’ll turn this in.
By the end of the experiment, you’ll need to have measurements that will help you determine the periods of your pendula and the lengths of your pendula.
What to turn in
This is not a formal lab report. Follow the instructions here. Everything should be contained in one PDF that you submit. Since this experiment is arguably easier to carry out than the lab-kit version, I will be holding your submitted lab report to a slightly higher standard. Make good choices, and explain those good choices as appropriate in what you submit.
Your picture
A couple paragraphs explaining how you measured your raw data and how you estimated/determined uncertainty of your raw data.
A table of your raw data, with correct units and uncertainties listed with proper rounding and sig figs.
Another table showing your calculated values that you will be plotting such that the slope of your plot is local g. Be sure to propagate uncertainties and use correct rounding and sig figs rules.
A properly labeled graph (units on axes, good title, etc.) with best fit, max slope, min slope lines on it.
A couple sentences stating exactly the three slopes’ values.
A final statement of the your measured g value and its uncertainty, with proper rounding and proper sig figs.
A paragraph about what went well, what didn’t go well, and what you could improve next time. A comparison (agree/disagree) is not needed.

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