LAB – Drawing an Ellipse

You must

Have at

least 5

trials.

Write out the steps that your group will follow in

detail here.

Create a table to organize your Data

Here.

Data should include:• # of Spins• Time• SMA (dist)• # Washers• Orbital

Period

To Calculate Orbital PeriodOP=# of Spins / Time

After completing your Experiment you are to create a graph showing Orbital period (Dependent Variable) VS Semi-Major Axis Length or # of Washers (Independent Variable).

Be sure your Graph has the following;• Labeled Axis's• Accurately graphed Data.• A Title.

String Length (semi-major axis)

Orb

ital

Perio

d

Title…..

# of Washers

Finally, Answer each of the Conclusion questions in a complete sentence.

Length (cm) Time (sec) Spins OP (rev/Sec)20 30 76 2.530 30 63 2.140 30 55 1.850 30 50 1.770 30 43 1.490 30 34 1.1

Orbital Period Data

10 20 30 40 50 60 70 80 90 1000.0

0.5

1.0

1.5

2.0

2.5

3.0

Change in Orbital Period with increased Semi-Major Axis

Length of String (Semi-Major Axis)

Orb

ital

Per

iod

Kepler Review

Kepler Review