With the aid of a diagram explain how to determine the centre of gravity of an irregular object using plumbline

Draw a line on the object along the string. For Step 2, repeat the procedure from another point on the object You now have two lines drawn on the object which intersect. The center of gravity is the point where the lines intersect. This procedure works well for irregularly shaped objects that are hard to balance.

Explanation:

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your answer is, orbit around the nucleus