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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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NEWTON’S LAW OF GRAVITY

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

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

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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.

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

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STEP TWO:EXPERIMENT PROCEDURE : EXPERIMENT

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

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

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

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

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

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

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

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

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

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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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