#  Center-of-Mass and Relative Motion 

 



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### Center of Mass

\[M | t+ | —\]   
Irregular lamina with marked center-of-mass tossed in air.

\[[In-Depth Description](/presentations/center-mass)\]

### Irregular Lamina

Irregular lamina with marked center-of-mass tossed in air. (m) (T)

\[[In-Depth Description](/presentations/irregular-lamina)\]

### Air Track Center-of-Mass Motion

\[L | t+ | —\]  
Push-me/pull-me gliders or pendulum glider on air track.   
  
\[[In-Depth Description](/presentations/air-track-center-mass-motion)\]

### Air Table Center-of-Mass Motion

\[L | t+ | —\]  
Coupled masses on air table.   
  
\[[In-Depth Description](/presentations/air-table-center-mass-motion)\]

### Magic Marker Center-of-Mass Motion

\[M | t+ | —\]  
Markers attached to an irregular lamina record the motion of various points, including the COM.

### Relative Motion

\[M | t+ | — \]   
A toy tractor, travelling straight across a moving mud slide, ends up traveling diagonally downstream.