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:
- Independent Variables:
-The number of rubber bands
- Dependent Variables:
-Time the rotational pendulum to make a complete rotation
- Controlled Variable:
-The number of rotations made before the rotational pendulum is released
-The weight of the pendulum
-The length of the ruler
-The devices that is attached to both ends of the rubber band
-The surrounding atmosphere
-The fashion in which the rubber bands will twist to avoid more or less twists
-The width and circumference on the rubber band
Method of collection:
- As with the given material in the apparatus, first create the rotational pendulum by attaching the weight to the ruler making sure an even distribution of balance.
- Then attach the rubber band to the hook of the weight and attach it to the hook of the clamp
- Make sure the rubber band is in a neat order as not to create unwanted twists
- Repeat steps 2 and 3 until ten rubber bands have been attached and the experiment complete
- Collect and process the data
Data table:
Hypothesis:
My hypothesis is that as the number of rubber bands increase the time of one complete rotation will increase. However, I also hypothesis that results will follow an exponential curve, thus showing that as the rubber bands increase the amount of time that increases will lessen.
Notes:
Information about the Lab:
The rubber band has a width of approximately 0.15 + 0.05cm and when stretched with the 200 gram weight is 15 cm long.
G4IA Assessment sheet 2/10/2009
Student: Min, Hae Bung
Investigation: Torsional Pendulum Lab
Time: 1.0Hrs
Date(s): 24/09/08
Design
General comments
Ringo Dingrando
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