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Time that Period! Student Worksheet

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  1. Each student is responsible for creating a line plot of amplitude of each swing versus mean time it takes to make that swing on his or her own graph paper.

    Graph for mean time versus swing amplitude

  2. Once you plot the data you have the "picture" of the period.

  3. Your guess of that period is

  4. How would the results be different if instead of a string 30 cm long, we used 10 cm string?

    How about a string 100 cm long?

  5. Summarize the relationship that you may see with time or swings and the use of different length string.

  6. This relationship is actually defined by certain laws of physics. These laws let us say that the period is equal to

    The Pendulum Equation

    Where g is the acceleration due to gravity (here on Earth it has a value of 9.8 m/sec2.), L is the length of the pendulum string from where it is tied at the top to where the center of mass is of the tied object, and pi = 3.14.

    Does your guessed period in question 3 confirm this? Prove this by showing your work below.

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