Advertisements
Advertisements
प्रश्न
Define centre of gravity.
Define the term ‘centre of gravity of a body’.
Advertisements
उत्तर १
उत्तर २
The centre of gravity is an imaginary location where the body’s whole weight is assumed to be concentrated.
APPEARS IN
संबंधित प्रश्न
'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.

Even though the Tower of Pisa is leaning through an angle it does not fall.
Can the CG be situated outside the material of the body? Give an example.
Explain why a tight rope-walker, often holds a long pole in his hands when in action.
State two methods of increasing the stability of the 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.
A metal sphere is hanging from the ceiling of a vehicle. If the vehicle is moving along the horizontal road with uniform acceleration 'a' then the suspended thread of the sphere gets inclined to the vertical at an angle 'θ'. The value of acceleration 'a' is (g = acceleration due to gravity) ______.
In a uniform gravitational field on Earth, the Centre of Gravity and Centre of Mass are ______.
