Advertisements
Advertisements
Question
Explain the term ‘centre of gravity’ of a body.
Advertisements
Solution
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.’
RELATED QUESTIONS
Give an example of a non-contact force which is always of attractive nature
Explain the motion of a planet around the Sun in a circular path.
At which point is the centre of gravity situated in a triangular lamina?
Even though the Tower of Pisa is leaning through an angle it does not fall.
State two methods of increasing the stability of the body.
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 ____________.
When balancing a ruler on your finger, the point of balance is the ruler's:
Why is it beneficial for engineers to design tall structures with a low Centre of Gravity?
In a non-uniform gravitational field, how does the Centre of Gravity relate to the Centre of Mass?
