Moments and Centers of Mass

Moments and Centers of Mass

Moments and Centers of Mass: (Distributed Over a Plane Region)

Given particles of mass distributed over a plane,

Let

Center of One Mass

The Center of One Mass for Each Mass

= (The Displacement From the y-axis , The Displacement From the x-axis)

Moment of One Mass About the x-axis

Moment of One Mass About the x-axis

= (Mass)x(Displacement From the x-axis)

The Moment of One Mass About the y-axis

Moment of One Mass About the y-axis

= (Mass)X(Displacement From the y-axis)

The Mass of the System

Mass of System

= The Sum of All Masses

The Moment of the System About the x-axis

The Moment of the System About the y-axis

The X-Coordinate for the System’s Center of Mass

The Y-Coordinate for the System’s Center of Mass

The system is balanced at the center of mass

Go to Page 3 For: Moments and Centers of Mass Bounded by Two Curves Using Vertical Strips

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