Why rotate around center of mass Pro Preview

What Is the Center of Mass?

The center of mass is the point in an object where its mass is balanced in all directions - it’s where the object would naturally balance if you tried to hold it up.

• For uniform, symmetrical objects, the center of mass is at the geometric center.

• For irregular objects, it depends on how the mass is distributed.

When you rotate an object around its Center of Mass:

• It spins smoothly without wobbling.

• The motion is pure rotation, with no unwanted side movement.

• No unbalanced forces try to move it off its axis.

Rotating Away from the Center of Mass Causes:

• Wobbling and unstable motion.

• The center of mass moves in a circle, creating unwanted vibrations.

• Extra stress on mounts, motors, and axles.

Real-World Examples:

• Drones: Must stay balanced for stable flight.

• Washing Machines: A balanced drum prevents shaking.

• Satellites: Stable rotation depends on precise balance.

• Engines & Turbines: Balance reduces vibration and wear.

• Robots: Balanced arms and wheels move more predictably.