Simulations_1

# Simulations_1 - PHY 119 SIMULATIONS 1 Simulations can be a...

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PHY 119 SIMULATIONS 1 Simulations can be a neat way to explore ideas. They lack the full complexity of having a conversation with nature so they can’t really tell us what would actually happen, but for the same reason they are often easier to work with and interpret. Here are two that are related to what we’ve been doing in class: Springs and Masses: http://phet.colorado.edu/new/simulations/sims.php?sim=Masses_and_Springs Waves on a String: http://phet.colorado.edu/new/simulations/sims.php?sim=Wave_on_a_String They’re kind of like video games, and you should feel free to play with them as much as you like. For this weekend I have identified five little explorations for you to work on using these simulators. Enjoy, and watch for more on Sunday or Monday (since we don’t have class on Monday). SPRINGS AND MASSES The Springs and Masses simulation is interesting for us – we’ve done the real experiment and found that doubling the mass means the decreases the frequency to about ¾ of its original value. That is, if the frequency was 8 cycles per second with the original mass, after we double the mass the frequency will be close to 6 cycles per second. In our experiments the spring has some mass. In the simulation, it doesn’t, so the comparison is

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Simulations_1 - PHY 119 SIMULATIONS 1 Simulations can be a...

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