February 28, 2017

Homework Help: physics

Posted by kyle on Saturday, November 5, 2011 at 4:56am.

Hello can you please help me with this investigation. I am having lots of problems with it can you please help.
Thandeka wanted to investigate whether the number of vibrations per second depended on the length of the pendulum string. She sat up the apparatus. She pulled the string with the mass piece sideways to position A, which is about 20cm from position B, and allowed it vibrate whilst counting the vibrations in 30 seconds.
1) Write one term for number of vibrations per second.
2) Formulate an appropriate problem question for the investigation.
3) Identify the: independent variable. Dependent variable.
4) Name one variable that Thandeka should keep constant during the investigation.
5) Write down a suitable hypothesis for her investigation.

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