from sea level to the absolute center of the core
2007-02-21 18:01:58 · 8 answers · asked by eric s 1 in Science & Mathematics ➔ Astronomy & Space
Free fall here would not be the same as free fall above the earth.
When you first jumped in you would accelerate but at a decelerating rate.
As you fell your speed would diminish more and more as you approached the center due to the mass and gravity between you and the surface.
if you traveled 4000mph you would do it in 1hour,at 400mph 10 hours.
Terminal velocity at the surface of the earth is about 120 mph.
Below the surface the terminal velocity would be less.
I'm not sure how long it would take but you can see you would be on a fairly long journey.
2007-02-22 03:01:28 · answer #1 · answered by Billy Butthead 7 · 0⤊ 0⤋
Well, you got widely differing answers. I can't give you the exact answer but the approach needs to take into account the change of g with the distance from the centre. the acceleration due to gravity is 9.8 m/s at the surface and is Zero at the centre. So, this variation needs to be factored into any equations that you set up.
I can't do the equations at this point of time.
2007-02-21 18:19:12 · answer #2 · answered by Swamy 7 · 0⤊ 0⤋
It would take about 10 minutes to fall to the center after oscillating at approximately 8000 m/s.
2007-02-21 18:05:36 · answer #3 · answered by Mickey Mouse Spears 7 · 0⤊ 0⤋
It is easy to calculate , provided you ignore friction and especially the high pressure and temperature ( which would destroy you) , and also ignoring the earth's rotation (which would cause you to hit the sides of the hole).
The entire trip to the other side (if the hole went to the other side of earth) would take about 42 minutes....so to the center would take 21 minutes....The calculation is done here:
http://hyperphysics.phy-astr.gsu.edu/hbase/mechanics/earthole.html
2007-02-21 22:42:27 · answer #4 · answered by Anonymous · 0⤊ 0⤋
This is known as the dynamical timescale and is roughly equal to 1/sqrt(G * density) = 1/2 hour for the Earth.
2007-02-21 18:05:16 · answer #5 · answered by Matthew S 2 · 0⤊ 0⤋
Well how do you answer that the core happens to be surrounded by earth and water?
2007-02-21 18:07:20 · answer #6 · answered by Ms.Pickle 3 · 0⤊ 0⤋
6378 kilometers (radius of earth) / 320 kph (estimated rate of free fall) = about 21 hours? LOL. wow that would be kinda fun but would suck also.
2007-02-21 18:07:44 · answer #7 · answered by F1reflyfan 4 · 0⤊ 1⤋
the radius of earth=6400000m
u=0
h=ut+1/2gt2
6400000=0+1/2*9.8t2
t2=6400000*2/9.8
time taken=1142.8571428571428571428571428571s
2007-02-21 18:08:56 · answer #8 · answered by initial man 2 · 0⤊ 2⤋