(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I had to do a lab, the diagram of which is shown.

The radius (r) of the string was 50.0 cm, and our first mass was 29.0 g. The time for 20 trials was 15.75 s. We repeated the process with five other masses and recorded all the same information. Then, we had to plot the weight (F) of the masses versus the frequency and find the slope of the line of best fit. Our slope came out to be 3.83 (according to Excel).

We also have to use this information to find the mass of the rubber stopper. My attempt at the solution is below but I'm not sure if I did it right. Also, someone else in my class told me that the mass of the stopper should be close to the slope of the line of best fit, but mine was way off. Is that true?

2. Relevant equations

F = m4π^{2}r/T^{2}

3. The attempt at a solution

F = m4π^{2}r/T^{2}

0.284N = m(4)(π^{2})(.5m)/(.62s)

m = 0.0089 kg

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# Homework Help: Centripetal Force Lab of string and mass

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