Question

Explain how you will determine the position of centre of gravity experimentally for a triangular lamina

Answer 1

Make holes A,B and C near it's every edge .Fix a nail through one of it's edge.
So that the object can move freely.
The object will come to rest with it's centre of gravity,just vertically below the nail.
Vertcal line A can be located using a plumbline hung from the nail.
Mark the line on that behind the plumbline.
Repeat this process by supporting the card from B.
The line B should intersect with line A at G point.
Similarly draw another line from point C .
It should also pass from G.
It will be found that vertical lines from A,B and C have a common point G.
THIS POINT IS THE CENTRE OF GRAVITY.

Answer 2

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HERE'S YOUR ANSWER

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1. Consider 3 points A B and C.
2. Fix a nail through one of its point
3. Vertical line A can be located using a plumb line hung from the nail.
4. Mark the line on that behind the plumb line
5. Repeat this process by supporting the card from B.
6. The line B should intersect with line A at G point.
7. Similarly draw another line from point C.(it should also pass from G)

IT WILL BE FOUND THAT THE VERTICAL LINES FROM A B and C have a common point G .

THIS POINT IS THE CENTRE OF GRAVITY.

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