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Knex 78890 - Education Amusement Park Experience Teachers Guide Manual

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LESSON 10
10: I
10: I
NVESTIGATING
NVESTIGATING
THE
THE
P
P
ERIOD
ERIOD
OF
OF
A
A
P
P
ENDULUM
ENDULUM
69
Am usement Par k Ex perienc e
In Groups
4. Ask the student groups to:
a. Determine a height from which to release the ship in order to start it swinging. This release
height must remain consistent throughout this activity until another direction is given to
change it.
b. Measure the height from what would be considered the pointed end of the ship that is highest
in the air.
c. Use the stopwatch to determine the length of the period of the ship (a pendulum.) This will be
the time it takes the pendulum to complete one vibration – from one crest to the next.
d. Repeat 3-5 times, record findings in a data table and determine the average of their trials.
The average is the period of the pendulum. Other data in future investigations will be compared
to this as students determine whether the various independent variables have altered the period
of the Pirate Ship system.
5. Changing the Rod length:
a. Change the color of Rod holding the ship. The new Rods should be shorter than those
used originally.
b. Release the ship from the same height as you did in the previous activity.
c. Repeat steps 4b-4d.
d. Repeat the entire investigation once more using a third (shorter) Rod length.
e. Write a paragraph about what happens to the period of the pendulum when the length of the
rod holding the ship is changed.
6. Changing the mass:
a. Replace the original red Rods that were used to support the ship.
b. Place a quantity of pennies in a 3 oz. bathroom-style paper cup and find its mass.
c. Place the cup into the ship. (There is space for two, 3 oz. cups to be placed into the body of
the ship.)
d. Repeat Steps 4b-4d.
e. Repeat Steps 4b-4d with (i) double the mass of pennies (ii) quadruple the mass of pennies.
f. Write a paragraph about what happens to the period of the pendulum when mass is added to
the ship.
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