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ICSE Class 10 Physics Question 3 of 27

Solved 2023 Question Paper ICSE Class 10 Physics — Question 17

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Question

Question 2(ii)

(a) What is the position of centre of gravity of a triangular lamina?

(b) When this triangular lamina is suspended freely from any one vertex, what is the moment of force produced by its own weight in its rest position?

Answer

(a) The centre of gravity for a triangular lamina is at the point of intersection of the medians.

What is the position of centre of gravity of a triangular lamina? ICSE 2023 Physics Solved Question Paper.

(b) When the triangular lamina is suspended freely from any one vertex, the moment of force produced by its own weight in its rest position is zero. This is because the center of gravity of the triangular lamina is at the point where its medians intersect and the triangle is in rotational equilibrium. Hence, we get zero moment of force.