Explain briefly how to locate the centre of gravity of an irregular sheet of cardboard. 

Explain briefly how to locate the centre of gravity of an irregular sheet of cardboard.

• three holes are drilled around the edge of the cardboard.
• The cardboard is suspended from a pin through one of the holes. When the cardboard is freely suspended, a plumb line is suspended from the same pin.
• A line is drawn to mark the line where the plumb line passes.
• The procedure is repeated for the other two holes.
• The point of intersection of the three line is the centre of gravity

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