Main     Project Information     Introduction     Initial Observations & Hypothesis     Materials & Equipment    

Experiments     Discussion     Application     Conclusion

 

 

 

Application

 

Now I am ready to answer the question, “Can we determine the length without the ruler. The answer is, “Yes!”

We can find the length of the pendulum through its period. For this we need to change the formula (4) from Discussion :

 

  (5)

 

We can use formula (5) to create calibration table and plot.

 

 

Calibration Table

 

Period (sec)

1

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3

Length

(m)

0.25

0.30

0.36

0.42

0.49

0.56

0.64

0.72

0.81

0.90

0.99

1.10

1.20

1.31

1.43

1.55

1.68

1.81

1.95

2.09

2.24

 

 

 

Calibration Plot

 

 

 

Using any of them (whichever is preferable for you) one can find the length of the pendulum. Just measure how much time your pendulum needs for one cycle (period).

For practicing you can try to determine the length of the pendulum from the video clip.

 

 

Main     Project Information     Introduction     Initial Observations & Hypothesis     Materials & Equipment

Experiments     Discussion     Application     Conclusion