pendulum

we had a pendulum experiments .

this is the picture of my group :)

the materials that we needs are:

this is the example of the metal ball :)

1. a metal ball

this is the example of the string

2.three pieces of string ( 10cm , 15cm , 20cm)

this is the example of retort stamp

3. a retort stand .

this is the example of the musking tape

4.some masking tape .

this is the example of the proctactor

5. a proctactor.

 

this is the example of the stopwatch

6. a stopwatch


procedurs:
1. attach the metal ball to one end of the 10 cm string 
2. secure the masking tape to attach a protractor to the retort stand . 

At that time i was forget what is that date when i do the experiments, i was divided into 5/7 groups . my group mates are Clauvinna,Miranda, Brian , Ivana, Reynaldo,Bern and Ruben  first we go to the science lab , at the science lab we take our sit . then all the materials are given already in each of the table of the group :) . then first we cut the 3 string . each of the string has different centimeters we cut into 3 . the first strings is 10 cm , the second string is 15 cm , and the last string is 20cm . then we take the protractor and we take the masking tape and then  we tape the proctator with the retort stand . then we take the string and bundle it with the proctactor , before that we cut the fist string into 10 cm . then we swing the metal ball . adnd we observe how long it will swing we count it by the stopwatch . then after we observe it we change the string to 15cm , then we do the same thing again like the first one . after we swing it we observe it . after done we do the last one and we change the string again into 20 cm and then we do the same thing and then we observe again.~ 

I observe that how the length of the string affects the motion of the pendulum . ;{D