Because it has great mass, subatomic particles, called gravitons, cause it to attract all objects near it
No.
Yes. At least, the gravity resulting from planet Earth.
Yes; the gravity from different sides should cancel, for a net result of zero gravity.
No. At the centre of the earth the acceleration due to gravity is ZERO
Acceleration due to the earth's gravity is zero at the center of the Earth because at that point the mass of the earth is equally distributed in all directions, so pulling equally in all directions for a net zero pull. Simplistically, acceleration due to gravity decreases as distance from the center decreases. At the center the distance is zero, hence gravity is zero.
The gravity at the center of the Earth is zero because the mass around you causes gravity to be in equilibrium. It is pulling in all directions equally, resulting in a net zero gravitational force at the center.
when object fall free like at centre of earth that we call freefall with zero gravity.
No
There is no "zero gravity" place. Gravity permeates all the universe. Astronauts in orbit are often said to be in zero gravity but they are, in reality, on a position where their orbital velocity balances the attraction of the Earth.
Yes; the gravity from different sides should cancel, for a net result of zero gravity.
Nobody knows, because such a condition has never been observed, and in theory, can never take place. 'Gravity' is never zero on the earth's surface.
The zero gravity pen has never been changed or updated because it is almost flawless and nobody has anything to add to it.AnswerThe zero gravity pen relies on the polarity of water in the ink to induce the capillary action to draw ink down to the ball of the pen. Since this doesn't rely on gravity, there is no change when the pen is used on earth.