Torsional Pendulum Design Lab

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International Baccalaureate Physics        4/PSOW

Torsional Pendulum Design Lab

Aim:

You may be very familiar with swinging pendulums and the variables that do and do not affect.  In this design lab, you will learn about how a torsional (twisting) pendulum works.  

Apparatus:

  • Ring stand and clamps
  • Rubber bands
  • Ruler
  • Stopwatch
  • Hanging Mass
  • Sticky tack
  • Coins
  • Anything else you might find in a normal physics classroom.

Design:

Design a procedure to test how a certain variable (of your choice) may affect a twisting.  As always, this should design lab should include…..

  • Defining the Problem and selecting variables:
  • Controlling the Variables:
  • Developing a method for collecting data:
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Thus, step by step instructions and diagrams are helpful to the reader and highly recommended.  Also include a hypothesis and a sketch graph of what you think will happen.  

The above information was given to the student by the instructor.  What follows immediately below is the student’s own work.

 

Research Question:

How can increasing the number of rubber bands increase the time of rotation?

Variables:

  1. Independent Variables:

-The number of rubber bands

  1. Dependent Variables:

-Time the rotational pendulum to make a complete rotation

  1. Controlled Variable:

-The ...

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