Determination Of The Properties Of The Pendulum
Time: 1-2 class periods
Level: High School Physics (AP/IB)
Lesson OverviewA pendulum is a classic example of periodic motion, which is a motion that is repetitive, redundant, keeps repeating itself, keeps going back and forth…oh, I’ll stop now. A pendulum only works when there is gravity, and of course can be used as a clock. It is also an example of circular motion, which means there is a net centripetal force, mv2/R. Because we began studying circular motion and will be getting deeper into gravity, we will try to figure out the basic properties of a pendulum and see how we can combine gravity and circular motion together in a few different ways, whether it is a pendulum, an amusement park ride, or satellite motion. Keep the force diagram for a pendulum in mind (what does it look like?).
This lesson was developed by Mark Vondracek at Evanston Township High School
What effect(s), if any, do mass of the bob, length of the pendulum, and angular amplitude of a pendulum, have on the period of the pendulum? Our goal is to use mathematical fits to data to determine an empirical formula for the period of a pendulum. Your group is looking to combine your graphical fits into the form
State what you think the effect of mass, angular amplitude, length, and the acceleration of gravity have on the period of the pendulum. Remember, reality always tends to be a bit more complex than a book!
- Physical Science
- [HS-PS2] Motion and Stability: Forces and Interactions
- NGSS Practice
- Conducting Investigations
- Analyzing Data