1. Objectives EEn.1.1.2.E. Demonstrate how objects that orbit each other at their barycenter Agenda IN: Center of Gravity THROUGH: Barycenter Notes OUT: Finding the Barycenter LAB: Barycenter Lab Notebook Title: Barycenter Date: 2/26/13 Pages: How can we demonstrate that objects orbit each other at their barycenter?

3. Why is the ruler’s center of gravity at a different location than the sledge hammer? IN: Under your drawings, answer the following question:

4. Binary bodies are two celestial bodies held together by mutual gravitational attraction. EX: Earth & Moon Through: Barycenter Notes

5. Binary bodies are two celestial bodies held together by mutual gravitational attraction. EX: Earth & Moon Through: Barycenter Notes

6. Barycenter is the center of mass where two or more celestial bodies orbit each other. Through: Barycenter Notes

7. For example, when a moon orbits a planet, or a planet orbits a star, both bodies are actually orbiting around a point that is the center of mass of the two celestial bodies.

8. OUT: Sketch the following binary bodies in your notebook. Mark an X to show where the barycenter between the two object might lie. 123123