Question

8. Explain how will you determine experimentally the
position of the centre of gravity for a triangular lamina
(or a triangular piece of card board).
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Answer 1

Answer:

Take a triangular lamina. Make three fine holes at a, b, c near the edge of the triangular lamina. ... It is noticed that the lines ad, be and cf intersect each other at a common point G which is the position of the centre of gravity of triangular lamina i.e. the point of intersection of medians.

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Answer 2

Answer:

Draw another straight line and this line will intersect the previously drawn line at one point. Repeat the process by hanging the lamina from it's 3rd edge as well. All the 3 straight line thus drawn will intersect at one common point. This point is the centre of gravity of the Triangular Lamina.

Explanation: