Gravity at different places on earth
The centre of earth is equator and if equator is the centre of earth and as we know the gravity is maximum at centre of the earth then why the gravity is less there?
Asked Aishwarya
Answer:
(Evidently, the question is posted out of some misconception or confusion)
Centre of earth means the centre INSIDE THE EARTH, and there the value of g is zero.
At the equator, the distance from the centre is maximum and therefore g is the minimum. Further, the effect of rotation is maximum at the equator as the distance of any particle on the surface is farthest from the axis of rotation at the equator and any object at the equator requires maximum centripetal force which is derived from the gravitational force of earth. Thus in both ways, g is minimum at the equator.
Categories: Ask Physics, Gravitation Tags: acceleration due to gravity, doubt, g, gravitation, gravitational force, gravity, physics
Gravity and something more
Jihin Asked:
Some Things That I Have Always Wondered OF : (i hope it may be answered soon …)
1)is it possible that our human body can withstand pressures twice or more than the atmospheric pressure without a suite or is there any artificial instruments or means in which our heart can be made to pump into a level in which we can attain this ability !!!
2)when more gravity is experienced , it is said that time travels slowly – is it relative ??? caz time goes at a constant rate !!! it is only the position or view that makes the observer feel the situations ???
3) Is there any gravity chambers successfully made out … in which the gravity can be changed accordingly to observe diff. phenomena ??? Cant It be possible to do that ????
Ans:
To be posted soon.
However, I agree that I may not be able to give you a satisfying answer to all your queries, as “Science says the first word of everything and the last word of nothing.” We are learning new things everyday. When we explore more and more, we find that we know less and less and our knowledge is too meagre.
By the time I prepare a well fitting answer to this, visitors are also requested to respond to the question by posting answers and comments.
Categories: Gravitation Tags: Ans, answer, ask Physics, body, gravity, heart, physics, pressure, time
Defy gravity
Athira asked:
HOW FAST WOULD THE EARTH HAVE TO ROTATE SO THAT IT WOULD NEUTRALIZE GRAVITY?
Categories: Ask Physics Tags: ask Physics, ASKED, earth, gravity, physics
A question from Gravitation.
Prince Patel Asked:
“Sun have high gravitational energy ,then why planets of solar system doesn’t colloid with sun?”
Answer:
“The planets are moving around the sun and the gravitational force is used in providing the necessary centripetal force (The force required by a body to move in a circular path). As long as the planets are in motion, they will not move towards the sun. A similar explanation hold good for moon going around earth also.”
Categories: Gravitation Tags: answer, ask Physics, body, circular path, earth, explanation, gravitational force, gravity, hold, moon, physics, planet, sun
