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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
Give an example of a non-contact force which is always of attractive nature
On what factor does the position of the center of gravity of a body depend?
'The position of the centre of gravity of a body remains unchanged even when the body is deformed'.
The centre of gravity of a uniform ball is ______.
Following Fig shows piece of cardboard of uniform thickness cut into different shapes. Draw two lines to indicate the position of centre of gravity G.
Can the CG be situated outside the material of the body? Give an example.
State two methods of increasing the stability of the body.
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?
