http://s226.photobucket.com/albums/dd11/jackphotos123/?action=view¤t=EarthGravity.jpg
2007-12-03 06:58:32 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Haven't done this yet, but from my maths I would say:
3/4r - 7.3575m/s2
1/2r - 4.905m/s2
1/4r - 2.4525m/s2
But knowing me, I'm probably wrong x
2007-12-03 07:10:45 · answer #1 · answered by Anonymous · 5⤊ 0⤋
If the earth had the same density throughout, then the acceleration due to gravity would decrease linearly as you approached the center. That is, at (3/4)r the acceleration would be (3/4)(9.81 m/s²), and so on.
In actual fact, the earth's density changes with depth, so the change in acceleration is not linear. I believe the acceleration actually _increases_ a bit as you go down under the crust, and then it starts decreasing again. At 1/4 r, it is definitely more than (1/4)(9.81 m/s²), because the density of the core is quite a bit higher than the earth's average density.
2007-12-03 07:12:59 · answer #2 · answered by RickB 7 · 6⤊ 0⤋