Pendulums Experiment-Report-Mathematics

This Project Will Be Due By

September 30th.

A Pendulum

Group Members and Jobs

• Each member of your group needs to

have a specific job. The Job Titles are:

• Leader

• Scribe

• Engineer

• Technician/Mathematician

Leader• It will be the leaders job to

keep the group working

toward the goal of

completing the project on

time. The leader will also

need to assist the other

members of the group in

their jobs so it’s important

the leader be good at all

jobs.

Scribe

• The scribe is the writer and

artist of the group. The

scribe need to have excellent

handwriting and some

drawing skill. The scribe will

be responsible for writing the

information in the packet,

plotting the data on the

graphs and keeping the

packet in great condition.

Engineer

• Engineers design

materials, structures, and

systems while considering

the limitations imposed by

practicality. The engineer

will be responsible for

building and maintaining

the pendulum stand.

Mathematician

• The mathematician will

make measurements

and assure that careful

collection of data

happens. They will also

be timekeeper and

assist the scribe with

graphing.

Steps 1-3

• 1) Write the names of the members of your

group on the cover. I would like you to get a

binder folder for the finished report ASAP.

• 2) Read Swinging Through History article as

a group.

• 3) Copy the Driving Question on the board

as your Problem Statement.

Steps 4-6

• 4) Answer the questions about pendulums,

constants and variables. (Use scratch paper to

create a great answer before marking in your Lab

Manual.)

• 5) Build your tower and experiment with the

swinging pendulum a few times.

• 6) Write a hypothesis for each of the variables

you have defined.

Hypotheses

• Your hypotheses need to be IfThen

statements that connect the manipulated

variables to the responding variables.

• Look on the three graphs, on the X and Y

axes, to determine what your manipulating

and responding variables are. Remember

DRY MIX.

Hypotheses

• Look at the first graph! What is on the X axis?

• Length of swinger. So which variable is that?

• X axis (DRY MIX) X is the?

• Manipulating Variable!

• What is on the Y axis?

• Number of swings in 15 seconds. So which

Variable is that? (DRY MIX)

Hypotheses

• Y axis is the responding variable.

• So now write a hypothesis connecting these two

variables.

• IF I increase/decrease the length of the string

THEN the number of swings will

increase/decrease.

• Repeat this process for the other two variables on

the other 2 graphs.

Procedure

• By the way, what is the responding

variable in all three experiments?

• Number of swings in 15 seconds.

• Now, using those three hypotheses,

write a procedure to explain how you

will test these three variables.

We Must Progress!!!!

•Progress reports

will be due sooner

than you think.

Procedure

• Step 1: Build the pendulum tower. I don’t

need a detailed list of steps on building the

tower, just build it. I really want you to

define which variable you will be

manipulating, which ones you will be

controlling (not changing), and which one

you will be observing. (Responding)

Procedure

• Step 1: Assemble the pendulum tower.

• Step 2: The first experiment will MEASURE

(quantitative) how the starting height affects the

number of swings in 15 seconds. We will change

(manipulate) the starting height, control (don’t

change) the number of washers and the length of

the string. We will count the number of swings in

15 seconds. (Responding)

Procedure

• Now write steps 3 & 4 using the

same format but for the other 2

variables.

Procedure One

• Change the starting height of the swinger

and count the number of swings in 15

seconds.

• Use 15˚-30˚-45˚-60˚ and 75˚

• Count the swings and plot on your graph.

• Remember to control the other variables.

• This should be FINISHED TODAY!!!!!

Procedure Two

• Change the Mass of the swinger and count

the number of swings in 15 seconds.

• Use 3-5-7-9 washers

• Count the swings and plot on your graph.

• Remember to control the other variables.

• This should be FINISHED TODAY!!!!!

Procedure One

• Measure the length of the string and count

the number of swings in 15 seconds.

• Record this on your graph.

• Repeat for 20-40-60-80 and 100 cm.

• Remember to keep the other variables

controlled!

• Draw the line.