Bungie Barbie

Set up the equipment, attaching a Barbie on a cord to the force probe. Remember that you need to tell the Logger Pro what type of force probe is attached...it will not do so automatically. Determine Barbie's Fw, and F(net) and Fup Your calculations must be shown at the moment that Barbie is at the maximum extension of the rope. All calculations must be summarized in a table when you turn in the lab.

Procedures:
Produce as least 4 different graphs by dropping Barbie with different cords. Use the evidence to collect a rationale for the common use of rubber as a bungie cord, and whether it is supported by your data.

Sketch, describe, print or save your graphs for each "jump". Clearly indicate which cord or material was used. Also include information such as the amount of force and the time over which the force was applied. Record any relevant observations you saw during the jump.

Individual Conclusions (1/2 to 1 page, plus tables)

Describe the ideal harness for a bungie jumper so that net force is distributed across the barbie. This should be based on data you gathered when Barbie parachuted. Explain how the net time for the Barbie to stop jumping can affect a force distribution. (Think carefully: F=ma, but a = change in velocity/change in time)

Based on your data, is it possible to argue that there is a better material for a bungie jump than rubber? Why or why not?

What questions arose in the lab? What information have you found?