1.3.16 - Centre of gravity and moments in equilibrium

Be able to use the concept of centre of gravity of an extended body and apply the principle of moments to an extended body in equilibrium.

Use - centre of gravity and moments in equilibrium to connect the rule to the data and decision in the question.

This matters because - centre of gravity and moments in equilibrium determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - centre of gravity and moments in equilibrium to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Centre of gravity and moments in equilibrium is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.