Gravitational Field on surface of earth question
Favorites|Homepage
Subscriptions | sitemap
HOME > > Gravitational Field on surface of earth question

Gravitational Field on surface of earth question

[From: ] [author: ] [Date: 11-12-22] [Hit: ]
and the measured gravity isnt directly toward Earths center.What actually happens, is that the curvature of Earth conforms to the local plumb direction, so that it still seems to be down, even though there is a slight offset.Interesting fact: that the Mississippi river flows uphill.......

For all intermediate latitudes, the centripetal acceleration is less due to less radius from the axis (for the same rotation rate). Also, the centripetal acceleration isn't toward the center of Earth, but toward the axis of Earth. Combine the two terms (centripetal acceleration and true gravity), and the measured gravity isn't directly toward Earth's center. What actually happens, is that the curvature of Earth conforms to the local "plumb" direction, so that it still seems to be down, even though there is a slight offset.

Interesting fact: that the Mississippi river flows "uphill". As in, it flows from closer to Earth's center to farther from Earth's center. It only seems to be downhill, because it is downhill if measured relative to the bulging of Earth's "sea level". Centrifuging dominates true gravity in causing the Mississippi river to flow.

-
There is a contradiction in your question.

You noted that g α 1/r²

But then you said "From the centre of the earth, the field is zero. as it goes towards the the surface, the field increase with radius and mass."

Clearly this is wrong.

As r →∞, g →0.

In reality, you can't really "escape" the gravitational field of the earth or anything for that matter because no matter how far you are away, there is still a tiny, but finite, force that pulls you towards the earth.

Yin
12
keywords: surface,on,Field,earth,question,Gravitational,of,Gravitational Field on surface of earth question
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .