Advertisements
Advertisements
Question
State a factor on which the position of the centre of gravity of a body depend? Explain your answer with an example.
Advertisements
Solution
- The position of the centre of gravity of a body of given mass depends on its shape, i.e., on the distribution of mass in it. For example, the centre of gravity of a uniform wire is at its midpoint. But if this wire is bent into the form of a circle, its centre of gravity will then be at the centre of the circle.
- The centre of gravity does not have to always be contained within the body's substance. For example, a hollow sphere or ring's centre of gravity is the place in the middle where there is no substance.
APPEARS IN
RELATED QUESTIONS
The distance between two bodies is doubled. How is the magnitude of the gravitational force between them affected?
A uniform half meter rule balances horizontally on a knife-edge at 29 cm mark when a weight of 20 gf is suspended from one end
1) Draw a diagram of the arrangement
2) What is the weight of the half meter rule?
Give an example of a non-contact force which is always of attractive nature
What is the position of the centre of gravity of a cylinder?
At which point is the centre of gravity situated in a circular lamina?
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:
It is easier to push a boy standing on one leg than on both legs.
What is Gravitational force? Give gravitational units of force.
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 ____________.
