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प्रश्न
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?
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उत्तर
- Centre of the mass of an object allows us to apply Newton’s laws of motion to finite objects (objects of measurable size) by considering these objects as point objects.
- For objects in non–uniform gravitational field or whose size is comparable to that of the Earth (size at least few thousand km), the position of the centre of mass will differ than that of the centre of gravity.
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संबंधित प्रश्न
On what factor does the position of the center of gravity of a body depend?
State a factor on which the position of the centre of gravity of a body depend? Explain your answer with an example.
What is the position of the centre of gravity of a rectangular lamina?
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?
Where is the centre of gravity of a uniform ring situated?
'The position of the centre of gravity of a body remains unchanged even when the body is deformed'.
The figure shows three pieces of cardboard of uniform thickness cut into three different shapes. On each diagram draw two lines to indicate the position of the centre of gravity G.
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.
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.
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.
The centre of gravity of a hollow cone of height h is at distance x from its vertex where the value of x is ______.
Where does the position of centre of gravity lie for a circular lamina?
Explain why a ship loaded with light goods is more liable to be overturned than the one loaded with heavy goods.
Explain why Standing passengers are not allowed on the upper deck of a double-decker bus.
Explain the term ‘centre of gravity’ of a body.
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 ______ equilibrium, the centre of gravity remains at the same height when it is displaced.
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 ____________.
A hollow ice cream cone has height 6 cm.
- Where is the position of its center of gravity from the broad base?
- Will its position change when it is filled completely with honey? Write Yes or No.
In a uniform gravitational field on Earth, the Centre of Gravity and Centre of Mass are ______.
