Meter Stick Lab Systematic Error

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The discussion revolves around a lab experiment involving the measurement of mass and the determination of a meter stick's center of mass through balancing and torque calculations. The main inquiry is about potential systematic errors in the lab procedure. Participants are encouraged to identify possible sources of error before receiving further guidance. Additionally, there is a request for the data collected during the experiment to facilitate more detailed feedback. Addressing systematic errors is crucial for improving the accuracy of the experiment's outcomes.
andacbaba123
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Homework Statement
Meter Stick Lab
Relevant Equations
m1x1/x2=m2
Hello everyone! In class, we made a lab. The lab was basically first measuring a mass. Then, we found a meter stick's center of mass by finding the point where the stick was balanced. After that, we hanged the mass and changed the fulcrum point. We balanced it again and the torque equation gave as the mass of the meter stick. My question is, are there any systematic errors in this lab? If yes, what are them?
 
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andacbaba123 said:
Homework Statement:: Meter Stick Lab
Relevant Equations:: m1x1/x2=m2

Hello everyone! In class, we made a lab. The lab was basically first measuring a mass. Then, we found a meter stick's center of mass by finding the point where the stick was balanced. After that, we hanged the mass and changed the fulcrum point. We balanced it again and the torque equation gave as the mass of the meter stick. My question is, are there any systematic errors in this lab? If yes, what are them?
Welcome to the PF. :smile:

What are your thoughts about this question? We need you to do the bulk of the work on your schoolwork assignments, so we need to hear your thoughts on any sources of error before we can ask some questions and comment. Thanks.

Also, can you post the data you collected? You can attach a PDF or JPEG file with a screenshot of your document.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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