“Swingers” What is a pendulum?.

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Presentation transcript:

“Swingers” What is a pendulum?

Investigating Swingers Q: How many times do you think your swinger will swing in 15 seconds? P: Write your prediction. Don’t forget to include “because”.

Data Table?

What variable can we now change in your swinger that might change the number of swings in 15 seconds?

Release Position

Mass

Length of String 14 cm 18 cm 20 cm 25 cm 33 cm 45 cm 55 cm 70 cm 93 cm

What have we learned from Swingers?

Variable Anything that you can change in an experiment that might affect the outcome.

Pendulum A mass hanging from a fixed point that is free to swing to and fro.

Constant Everything that remains the same in the experiment.

Control The normal used to compare to the variable.

Controlled Experiment (Fair Test) An experiment in which one variable is changed and the outcome is compared to the control (first test).

System A set of objects that are working together.

See if you can create this! http://www.youtube.com/watch?v=SBOJ_Txs8AU