Pendulums Experiment-Report- Mathematics This Project Will Be Due By September 30 th.

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 If  Then 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 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 and 100 cm. Remember to keep the other variables controlled! Draw the line.