Experiment: The Damping Effect Of The Pendulum

Experiment: The Damping Effect Of The Pendulum

<p> Experiment: The Damping Effect of Air Drag on a Pendulum Bruce Dillon Lane Matheson Carol Brunjes</p><p>Objective: To show students the damping effects that occurs due to air drag and heat loss.</p><p>Materials:  Simple Pendulum  Stop watch  Ring Stand  Graph paper  Cardboard protractor large enough to measure angles at the bottom of the pendulum  Tape</p><p>Procedures: 1. Set up pendulum and protractor as shown.</p><p>Pendulum</p><p>Table Top</p><p>Protractor</p><p>2. Measure the length of the top of the string to the center of the mass. Record in data table. 3. Pull the mass back to an angle of approximately 40 degrees. Record angle in data table. 4. Release the mass and measure the maximum angle every 15 seconds. Continue until angle is 5 degrees or less. Record angles in data table. Discussion: A simple pendulum produces simple harmonic motion when the displacement from the equilibrium position is small. The small angle is used to reduce the amount of drag due to the air. However, if the angle is large then drag needs to be considered. In this case the oscillations of the mass of the pendulum are subject to a drag force proportional to the velocity. The system is the said to be “damped”. In damped oscillations the amplitude decreases exponentially with time.</p><p>Questions for Students: 1. Graph your data with amplitude on the y-axis and time on the x-axis. 2. Does your data agree with theory? Explain your response. 3. At what value of t would you expect your pendulum to stop completely? 4. What are some errors that might skew your data? 5. As amplitude decreases, what happens to the periods? </p>

View Full Text

Details

  • File Type
    pdf
  • Upload Time
    -
  • Content Languages
    English
  • Upload User
    Anonymous/Not logged-in
  • File Pages
    2 Page
  • File Size
    -

Download

Channel Download Status
Express Download Enable

Copyright

We respect the copyrights and intellectual property rights of all users. All uploaded documents are either original works of the uploader or authorized works of the rightful owners.

  • Not to be reproduced or distributed without explicit permission.
  • Not used for commercial purposes outside of approved use cases.
  • Not used to infringe on the rights of the original creators.
  • If you believe any content infringes your copyright, please contact us immediately.

Support

For help with questions, suggestions, or problems, please contact us