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PENDULUM Featuring the PENDULUM Gravity Lab Presentation by David Bang Jessamyn Hung Mandy Lin Jennifer Yoon SWINGING WITH GRAVITY.

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Presentation on theme: "PENDULUM Featuring the PENDULUM Gravity Lab Presentation by David Bang Jessamyn Hung Mandy Lin Jennifer Yoon SWINGING WITH GRAVITY."— Presentation transcript:

1 PENDULUM Featuring the PENDULUM Gravity Lab Presentation by David Bang Jessamyn Hung Mandy Lin Jennifer Yoon SWINGING WITH GRAVITY

2 NEWTON’S LAW OF GRAVITY

3 Determine the value of gravity (g) as accurately as possible. OBJECTIVE

4 Why did we choose to use the pendulum? How does the pendulum relate to gravity? PROCEDURE : REASONING

5 Is it possible to measure gravity using a pendulum? HYPOTHESIS If gravity puts force downwards on the pendulum, we should be able to calculate gravity using the time of one period.

6 STEP ONE: CREATING MODEL PROCEDURE : TRIAL & ERROR What were the errors for our first trial? How did we improve? Left: Trial 1 Right: Final Trial

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8 PROCEDURE : EXPERIMENT What tools and equipment did we use? Which applications and programs helped our process?

9 STEP TWO:EXPERIMENT PROCEDURE : EXPERIMENT

10 STEP TWO:EXPERIMENT RESULTS: RECORDED DATA Did having multiple trials help make more accurate results?

11 TrialLength (cm)Time (sec) for 10 swings Period (T)T2T TrialLength (cm)Time (sec) for 10 swings Period (T)T2T

12 TrialLength (cm)Time (sec) for 10 swings Period (T)T2T TrialLength (cm)Time (sec) for 10 swings Period (T)T2T

13 TrialLength (cm)Time (sec) for 10 swings Period (T)T2T TrialLength (cm)Time (sec) for 10 swings Period (T)T2T

14 TrialLength (cm)Time (sec) for 10 swings Period (T)T2T TrialLength (cm)Time (sec) for 10 swings Period (T)T2T

15 TrialLength (cm)Time (sec) for 10 swings Period (T)T2T TrialLength (cm)Time (sec) for 10 swings Period (T)T2T

16 TrialLength (cm)Time (sec) for 10 swings Period (T)T2T TrialLength (cm)Time (sec) for 10 swings Period (T)T2T

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18 STEP TWO:EXPERIMENT RESULTS: RECORDED DATA Finding out the value of “g”: Formula: = Where did the formula come from?

19 What were the factors that affected the accuracy of our experiment? ASSUMPTION & LIMITATIONS What were our thoughts throughout the process?

20 Our hypothesis was correct! Using the time of one period, we were able to calculate a measurement of gravity. Our final result for gravity was CONCLUSION 9.77  /  2


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