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प्रश्न
Explain the difference between g and G.
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उत्तर
'g' is acceleration due to earth's gravity and 'G' is universal gravitational constant.
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संबंधित प्रश्न
Let V and E be the gravitational potential and gravitational field at a distance r from the centre of a uniform spherical shell. Consider the following two statements :
(A) The plot of V against r is discontinuous.
(B) The plot of E against r is discontinuous.
Four particles having masses m, 2m, 3m and 4m are placed at the four corners of a square of edge a. Find the gravitational force acting on a particle of mass m placed at the centre.
Four particles of equal masses M move along a circle of radius R under the action of their mutual gravitational attraction. Find the speed of each particle.
Multiple Choice Question. Select the correct option.
The mass of earth is 6 × 1024 kg and radius of earth is 6.4 × 106 m. The magnitude of force between the mass of 1 kg and the earth is:
Where will you weigh more: at the centre of the earth or at the surface of the earth?
What is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.
You can change the direction in which an object is moving by___________.
Why does a ball moving on a table top eventually stops?
State the law of gravitation. Why is it called universal?
Different points in earth are at slightly different distances from the sun and hence experience different forces due to gravitation. For a rigid body, we know that if various forces act at various points in it, the resultant motion is as if a net force acts on the c.m. (centre of mass) causing translation and a net torque at the c.m. causing rotation around an axis through the c.m. For the earth-sun system (approximating the earth as a uniform density sphere).
