Centre of Mass
- Is the point around which all of its mass is evenly distributed
- For motion, we assume that all mass is condensed at this point
- It is the point about which a free body rotates
- The higher the COM, and the smaller the support base, the more likely the object is to topple over
- If the COM is low, it is in stable equilibrium. A force applied perpendicular to it will not tip it.
- If the COM is high, it is in unstable equilibrium. A force will be able to tip it.
- In neutral equilibrium, the object can roll but cannot tip over
- When the line of action of the gravitational force falls outside the support base, the object will topple over
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