Online Calculators since 2009
Welcome to our Physics lesson on Centre of Mass of Three Collinear Objects, this is the third lesson of our suite of physics lessons covering the topic of Determining the Centre of Mass in Objects and Systems of Objects, you can find links to the other lessons within this tutorial and access additional physics learning resources below this lesson.
When we have three collinear objects, the centre of gravity of the system is determined at the same way as for two distant objects described above. It is better to choose the reference point on the left of the first object, so that all three objects are on its right and as such, we can take all x-coordinates for the individual centres of mass as positive. Then, the equation (1) written for three objects shown below, is used.
Three objects are placed at the same line as shown below.
What is the position of the centre of mass of this system? All distances are calculated from the origin.
Using the equation (1) for three objects,
we obtain after the substitutions,
Therefore, the centre of mass of the system is slightly on the left of the second object.
You have reached the end of Physics lesson 6.2.3 Centre of Mass of Three Collinear Objects. There are 4 lessons in this physics tutorial covering Determining the Centre of Mass in Objects and Systems of Objects, you can access all the lessons from this tutorial below.
|Tutorial ID||Physics Tutorial Title||Tutorial||Video|
|6.2||Determining the Centre of Mass in Objects and Systems of Objects|
|Lesson ID||Physics Lesson Title||Lesson||Video|
|6.2.1||Centre of Mass of a Regular Non-Homogenous Object|
|6.2.2||Centre of Mass of a System Composed by Two or More Distant Objects|
|6.2.3||Centre of Mass of Three Collinear Objects|
|6.2.4||Centre of Mass of Three non-Collinear Objects|
Enjoy the "Centre of Mass of Three Collinear Objects" physics lesson? People who liked the "Determining the Centre of Mass in Objects and Systems of Objects lesson found the following resources useful:
We hope you found this Physics lesson "Determining the Centre of Mass in Objects and Systems of Objects" useful. If you did it would be great if you could spare the time to rate this physics lesson (simply click on the number of stars that match your assessment of this physics learning aide) and/or share on social media, this helps us identify popular tutorials and calculators and expand our free learning resources to support our users around the world have free access to expand their knowledge of physics and other disciplines.