Practice Problems
Frequency and Period #2
Directions:
On this worksheet you will examine properties of a simple pendulum, vibration graphs, and graphs of Period
2
vs Length.
omit
Question 1
During an experiment, data is collected on the vibrations of a simple pendulum. A graph of
Period
2
vs Length
is plotted and forms a linear graph with a slope of
3.71
and a y-axis intercept of
0.08
. Use the fact that the numerical value of the slope represents 4π
2
/g to determine the value of gravity in the lab room.
10.64 m/sec
2
3.39 m/sec
2
11.47 m/sec
2
42.56 m/sec
2
omit
Question 2
If the accepted value for gravity at sea level is 9.8 m/sec
2
, what was the percent error for this group's experiment?
6.677%
7.904%
28.193%
8.582%
omit
Question 3
According to the data summarized by the group's regression line in
Question #1
, determine the frequency of a pendulum that was 69 cm long?
0.379 hz
0.0625 hz
0.0950 hz
0.615 hz
omit
Question 4
How would the period of a 38 cm pendulum compare to the period of the pendulum in
Question #3
?
It would be the same.
It would be greater.
It would be smaller.
omit
Question 5
What is meant by the term pendulum bob?
The mass attached to the end of a simple pendulum.
It represents the angle from which a pendulum is released.
none of the four other statements listed is a correct answer.
It represents the pivot point from which a pendulum vibrates.
It represents a synonym for a pendulum's frequency.
omit
Question 6
What would be the correct units to measure the slope of the regression line described in
Question #1
?
T
2
/L
sec
2
/m
L/T
2
m/sec
2
omit
Question 7
What is the frequency of a pendulum whose vibration graph is shown below if its 1st trough occured at 7.85 seconds and its last trough occured at 48.85 seconds .
5.125 x 10
0
hz
0.195 hz
0.164 hz
0.171 hz
5.857 x 10
0
hz
omit
Question 8
Using the equation T = 2
p
SQRT(L/g) what would be the length of the pendulum in
Question #7
?
8.52 meters
6.52 meter
5.86 meter
2.92 meter
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