Coordinates of Centre of Mass of Composite Bodies and Figures

Centre of mass of an object is the point where the weight or mass is considered as zero. In the words, the point of relative mass of the object is the position from where the mass is considered to be distributed to the entire object.

For a simple rigid body whose density is uniformly distributed throughout the area has its centre of mass at its centroid. It also happens that centre of mass of an object falls outside the cross-sectional area of an object.

The above explanation specifies that centre of mass can be located at any point either inside the body or outside the body depending upon its mass density.

Coordinate of centre of mass:

Let us consider a composite body is divided into small elements as shown in figure below-

Answer

Links of Previous Main Topic:-

• Introduction to statics
• Introduction to vector algebra
• Introduction concept of equilibrium of rigid body
• Friction introduction
• Introduction about distributed forces
• Center of gravity and center of mass
• Centeriods of lines
• Centroids of areas
• Centroids of volumes
• Centroidal coordinate of elemental area
• Centroidal coordinate of elemental volume

Links of Next Mechanical Engineering Topics:-

• Area moments of inertia in rectangular and polar coordinates
• Mass moment of inertia introduction
• Work done by force
• Kinematics of particles
• Position vector velocity and acceleration
• Plane kinematics of rigid bodies introduction