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Equilibrium Template

# Equilibrium Template - working well measure its precise...

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Physics 211R: Lab Template Score: _____ Name: Section #: Name: Section #: Name: Section #: NOTE: Remember to SAVE this template as a Word document before starting the lab. Always re- member to save your template periodically throughout the lab. Goals: Understand static equilibrium, in which a system of objects remains stationary. Become proficient at calculating and visualizing torques along several axes. Note the role of center of mass in simplifying calculations of equilibrium. Lab Activity: I. Calculations In the space below show why your mobile works. Either strategy is fine, so long as at the end you have demonstrated experimentally that your design works, and demonstrated mathematically why it works. (1) Design and Build: use the equations of static equilibrium to design a particular arrangement of masses that should be in static equilibrium and then build the resulting design.

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(2) Build and Test: construct a balanced two-dimensional mobile by trial and error, and once it is

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Unformatted text preview: working well, measure its precise geometry and verify mathematically that it satisfies the equa-tions of static equilibrium. II. Force Diagram Draw a diagram of your final setup (hand drawn is fine), indicating all the relevant forces and torques. Demonstrate static equilibrium via detailed calculations of the torques and forces on each component part of your mobile. Since you cannot measure the dimensions and masses of your mobile with perfect accuracy, you will have some slight error in your final results. Discuss whether the discrepancies between the observed behavior of the mobile and your calculations of static equilibrium are consistent with your estimates of the errors in your measurements. Extra Credit Explain precisely why it is important, if we want the mobile to be in equilibrium only when the metal square is oriented horizontal (and not when skewed at some angle), that the hanging masses be large enough to flex the square....
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Equilibrium Template - working well measure its precise...

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