Why is G 0 at the center of Earth?
At the centre of Earth, the force due to upper half of the Earth will cancel the force due to lower half. Therefore, when F=0, then g has to be 0. Thus, the value of g is zero at the centre of Earth.
At what condition acceleration due to gravity is zero?
Weightlessness occurs during free fall and at the null point. The space between any two heavenly bodies at which the resultant gravity is zero is said to be a null point. In a falling parachute, when a weight of the parachute becomes equal to the air resistance, its acceleration is zero.
Where is acceleration due to gravity maximum?
Where, g is the acceleration due to gravity on the surface of the earth. g’ = g Thus acceleration due to gravity is least at the equator and maximum at the poles.
Does value of g change?
In the first equation above, g is referred to as the acceleration of gravity. Its value is 9.8 m/s2 on Earth….The Value of g Depends on Location.
| Location | Distance from Earth’s center (m) | Value of g (m/s2) |
|---|---|---|
| 1000 km above surface | 7.38 x 106 m | 7.33 |
Is force of gravitation ever repulsive?
Both in the Newton theory of gravitation and in the General Theory of Relativity the gravitational force is exclusively attractive one. However, the quantization of gravity shows that the gravitational forces can also be repulsive [3].
Is force of gravitation always attractive?
We all know that all the forces in nature exist in opposites, but gravitational force is the only force that always attracts every object and never reples any.
Which could be an attractive and repulsive force?
A stable state of a bond is when attractive forces balance repulsive forces. “A stable state between two atoms or two molecules is when they attract each other with a force that equals the force that they repel each other.” Chemical bonds release energy when they form.
What affects electrostatic attraction?
The charge and size of a ligand atom and/or metal ion can effect the electrostatic attraction between the two, in turn effecting the attractive force between metal and ligand. This comes from Coulomb’s Law. In general, the higher the charge, the stronger the attraction between metal and ligand.