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January 6 AP Physics

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In: How would the period of a pendulum on earth differ from that on the moon?

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Objective: Find out the relationship between period and length of a pendulum. Success criteria: to be able to explain the equation for the period of a pendulum

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Lab: period of a pendulum Problem: what are the variables that affect the period of a pendulum? List possible variables Test possible variables From your data, determine what the variables are that affect the period of a pendulum. What are the relationships between the variables?

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Now that weve determined what variables affect period… what is the relationship? Tα ? Tα L Tα 1/L Tα L 2 TαLTαL

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Direct relationship: graph is a straight line Y α X

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Inverse relationship Y α 1/X Plot the reciprocal to get a straight line.

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Power relationship Yα X 2 Square the x axis values

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Root relationship Y α X Plot the square root of the x values to get a straight line.

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What relationship have you found?

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Pendulum: T=2πl/g l=length of pendulum g=acceleration due to gravity: 9.8 m/s 2

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A clock has a pendulum with a length of.5 meters. What is the period of the pendulum?

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How long a pendulum do you need to make a clock goes tick-tock every second?

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Synthesis: I own/ I dont understand Out: How is simple harmonic motion similar to a wave?

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