Education Technology

Swinging Along

Activity Overview

Students model the data from the motion of a pendulum by a periodic function. They relate its parameters to the time for one period, the distance it is pulled back, and its distance from the motion detector.

Before the Activity

  • Connect the calculator to the CBR 2™
  • Install the TI Connect™ software to analyze data on the computer
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 73 - 76 from the attached PDF file for your class
  • During the Activity

    Distribute the pages to your class.

    Follow the Activity procedures:

  • Run the Ranger program
  • Mark the at-rest position of the pendulum with masking tape
  • Pull the pendulum toward the CBR, release it, and begin collecting data
  • Study the graph of distance versus time
  • Measure and record the distance in meters from the CBR to the pendulum?s rest position
  • Measure and record the distance in meters from the pendulum?s rest position to the point it was pulled back
  • Find the average time for one cycle
  • Calculate the amplitude, vertical shift, and the period
  • After the Activity

    Students will complete the data sheet and answer questions listed on pages 75 ? 76.

    Review student results:

  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary