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प्रश्न
Explain the term ‘centre of gravity’ of a body.
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उत्तर
A body can be considered to be made up of a number of particles, each particle has weight ‘W’. Weight of all these particles acts vertically downward and can be replaced by a single resultant force. This force passes through a fixed point. ‘G’ which is a point where the algebraic sum of moments of weight of all the particles is zero and is called the centre of gravity of the body.
Thus we can define ‘CG’ as ‘the point through which the weight of the body acts irrespective of the position of the body.’
संबंधित प्रश्न
A uniform half meter rule balances horizontally on a knife-edge at 29 cm mark when a weight of 20 gf is suspended from one end
1) Draw a diagram of the arrangement
2) What is the weight of the half meter rule?
At which point is the centre of gravity situated in a triangular lamina?
At which point is the centre of gravity situated in a circular lamina?
A uniform flat circular rim is balanced on a sharp vertical nail by supporting it at point A, as shown in the figure. Mark the position of the centre of gravity of the rim in the diagram by the letter G.
Can the CG be situated outside the material of the body? Give an example.
When balancing a ruler on your finger, the point of balance is the ruler's:
In a non-uniform gravitational field, how does the Centre of Gravity relate to the Centre of Mass?
