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प्रश्न
Give scientific reasons for the following:
Even though the Tower of Pisa is leaning through an angle it does not fall.
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उत्तर
The Tower of Pisa does not fall because the vertical line passing through its centre of gravity still falls within its base. Therefore, its weight does not produce enough turning effect to topple the tower.
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संबंधित प्रश्न
'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.
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.
Give scientific reason for the following:
In a doubled decker bus passengers are not allowed to stand in the upper deck.
The centre of gravity of a hollow cone of height h is at distance x from its vertex where the value of x is ______.
Explain why a ship loaded with light goods is more liable to be overturned than the one loaded with heavy goods.
A boy of mass 40 kg runs up a height of 30 steps, each 20 cm high. Find:
(i) The force of gravity acting on the boy.
(ii) The work done by the boy against gravity. (Take g = 9.8 ms−2)
In a uniform gravitational field on Earth, the Centre of Gravity and Centre of Mass are ______.
In a non-uniform gravitational field, how does the Centre of Gravity relate to the Centre of Mass?
