# 17.2 Worked Example - Center of Mass of 3 Objects | Summary and Q&A

10.2K views
June 2, 2017
by
MIT OpenCourseWare
17.2 Worked Example - Center of Mass of 3 Objects

## TL;DR

The video explains how to calculate the center of mass for a system of three planets.

## Install to Summarize YouTube Videos and Get Transcripts

### Q: What is the center of mass?

The center of mass is a point in a system where the total mass can be considered to be concentrated. It is the average position of the masses in the system.

### Q: How is the total mass of the system calculated?

The total mass of the system is calculated by adding up the masses of all the objects in the system. In this case, it is the sum of the masses of the three planets.

### Q: How are the distances between the planets and the center of mass calculated?

The distances between the planets and the center of mass are calculated by measuring the distances from each planet to the center of the coordinate system.

### Q: What factors affect the position of the center of mass?

The position of the center of mass is determined by the masses of the objects and their respective distances from the origin of the coordinate system. Changing any of these factors will affect the position of the center of mass.

## Summary & Key Takeaways

• The video demonstrates how to calculate the center of mass for a system of three planets.

• The total mass of the system is determined by adding up the masses of each planet.

• Using the sum of the masses and their respective distances, the position of the center of mass can be calculated.