Tuesday

September 16, 2014

September 16, 2014

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

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.

- physics -
**drwls**, Saturday, November 5, 2011 at 6:13am(1) you can call the number of vibrations per second, f.

(2) You want to know how f depends upon m, the string length, L

(3) The independent variable is L.

(4) You should also keep the mass M the same. Keep the deflection angle the same also. That means that, as the length changes, the mass will be pulled different distance from the equilibrium position.

(5) The results might sjuggest that the frequency is inversely proportional to L^(-1/2)

Athough the experiment will not show it, f is independent of M and slightly dependendent upon the angle A. Those two parameters would have to be varied separately to verify this.

**Answer this Question**

**Related Questions**

English - Please check for an errors and correct them for me. As you know two ...

Statistics - Give a brief account of the chief methods of collecting primary ...

English - 1. Hello. May I speak to Tom? Speaking. Who's this? Hi,Tom. This is ...

Algebra - Hello Reiny, please check these problems for me and if they are not ...

math - 5/2 has to be made into a mixed number but I'm having problems because i ...

Math - I am having problems understanding how to solve problems like the ...

PLEASE HELP W/ COMPUTER SCIENCE?? JUST 1 PROBLEM? - Write a complete Main method...

Social Studies - Please Help I know but please I'm the parent and my son tell me...

englsih - As my english is not good, could you please check the grammar of the ...

algebra 2 - A builder has 8 lots available for sale. · 3/4 Six lots are greater ...