PhysicsLAB Practice Problems
Frequency and Period #2

Directions: On this worksheet you will examine properties of a simple pendulum, vibration graphs, and graphs of Period2 vs Length.

Question 1  During an experiment, data is collected on the vibrations of a simple pendulum. A graph of Period2 vs Length is plotted and forms a linear graph with a slope of 3.86 and a y-axis intercept of 0.05. Use the fact that the numerical value of the slope represents 4π2/g to determine the value of gravity in the lab room.
Question 2  If the accepted value for gravity at sea level is 9.8 m/sec2, what was the percent error for this group's experiment?
Question 3  According to the data summarized by the group's regression line in Question #1, determine the frequency of a pendulum that was 102 cm long?
Question 4  How would the period of a 74 cm pendulum compare to the period of the pendulum in Question #3?
Question 5  What is meant by the term pendulum bob?
Question 6  What would be the correct units to measure the slope of the regression line described in Question #1?
Question 7  What is the frequency of a pendulum whose vibration graph is shown below if its 1st trough occured at 7.55 seconds and its last trough occured at 48.55 seconds .

Question 8  Using the equation T = 2p SQRT(L/g) what would be the length of the pendulum in Question #7?

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