The Slope Isn’t Always the Answer - Models and Trendlines for Linear Data скачать в хорошем качестве

The Slope Isn’t Always the Answer - Models and Trendlines for Linear Data

#apphysics #learnphysics #physicslab Don't report your results as just the slope of your graph. Watch this video to see how the slope must be compared to our model in physics labs. In this video, Dr. Trevor discusses the importance of analyzing data and comparing models and trendlines in physics. Models are equations that describe physical situations, while trendlines are the fits that we add to a graph. For most introductory physics classes, the model and the trendline follow each other closely. However, sometimes we have to adjust the equations to match the trendlines. The video provides an example of a spring and mass experiment, where we measure the stretch of a spring for each added mass and calculate the weight. The model for this is Hooke's Law, F = k delta y. After we plot the data on a graph we notice that the data looks fairly linear. Therefore, a linear trendline of the form y equals m x plus b is added. However, the Dr. Trevor reminds viewers to be careful and make sure they know which variable is which, and not confuse the slope with the mass in the experiment. After fitting the model and trendline together, we discover that the slope is equal to one over the spring constant k, and solving for the spring constant gives the final result of K equals 24.15 N/m. Dr. Johnson warns against being that student who reports incorrect results without realizing that the units of the slope are incorrect or without asking for help if there is a large percent error. Overall, the video emphasizes the importance of properly analyzing data and comparing models and trendlines in physics experiments to obtain accurate results. You'll find more information about writing lab reports in this playlist... This is part of a lab-writing playlist:    • Writing Lab Reports   Song: Tokens Music by: CreatorMix.com