Mass Determination Using Torque and Equilibrium: A Meter Stick Experiment

AI Thread Summary
The discussion revolves around determining the mass of a meter stick using torque and equilibrium principles without direct measurement. Participants suggest utilizing materials like washers and a pencil to create a system that balances forces and torques. The key equations involve ensuring net force and net torque equal zero to establish equilibrium. There is confusion regarding the application of kinematics versus the required focus on torque and equilibrium. The conversation emphasizes the need for a clear experimental setup to achieve the goal.
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Homework Statement



Purpose: Determine the mass of a meter stick without directly measuring it.

Possible Materials:
Select the appropriate materials you will use.

__ Meter Stick __ Thermometer __ Stop watch __ Washers __ Knife edge
__ Plastic ruler __ Known Masses __ String __ Pencil __ Metal/wooden rod
__ Marbles __ Cardboard pieces __ Sponge pad __ Sticky tape __ Elastics

You are not allowed to use a scale!



Homework Equations



How do i work this out?...im stuck

The Attempt at a Solution



I think from the conditions of mechanical equilibrium, Net Force = 0 and Net torque = 0 you could solve it... But I am not sure how...
 
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I would try to use the string the Washers and the pencil to somehow create a truck. I would put the meter stick on it and somehow give it a certain force ( like tie it with the metal rod) and count the time it needs to go some distance. Then I would repeat that replacing though the Meter stick with the known masses.
 
what? we ar supposed to use torque and equilibrium not kinematics
 

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