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प्रश्न
What is centre of gravity ?
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उत्तर
The centre of gravity of an object is the point through which the entire weight of the object appears to act.
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संबंधित प्रश्न
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'.
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.
A right-angled triangle cardboard piece is placed as shown in fig. 7. Redraw the diagram showing the relative position of the vertices of the triangle when it is suspended by a pin from the hole A. Explain why the position changes?
Give scientific reasons for the following:
Even though the Tower of Pisa is leaning through an angle it does not fall.
Where does the position of centre of gravity lie for a circular lamina?
Answer the following question.
Why do we need to know the center of mass of an object? For which objects, its position may differ from that of the center of gravity?
If mean radius of earth is R, its angular velocity is ro and the acceleration due to gravity at the surface of the earth is g, then the cube of the radius of the orbit of satellite will be ____________.
In a uniform gravitational field on Earth, the Centre of Gravity and Centre of Mass are ______.
Why is it beneficial for engineers to design tall structures with a low Centre of Gravity?
