Ball drop through earth

  • Thread starter Molydood
  • Start date
  • #1
117
0
If I drilled a hole all the way through the earth, and then dropped a ball down one end, what do you think the speed versus distance plot would look like?

I am interested in the centre point of the earth primarily - instinct tells me it would overshoot by quite a bit, but how far?

assume no wind resistance
 

Answers and Replies

  • #2
ZapperZ
Staff Emeritus
Science Advisor
Education Advisor
Insights Author
35,847
4,676
If I drilled a hole all the way through the earth, and then dropped a ball down one end, what do you think the speed versus distance plot would look like?

I am interested in the centre point of the earth primarily - instinct tells me it would overshoot by quite a bit, but how far?

assume no wind resistance

And if other assumptions to be made include the earth as a sphere with uniform density, no spinning, etc... then if you solve for the gauss's law equivalent for the gravitational field, you'll get a mass-spring system!

This is a common question in undergraduate mechanics course.

Zz
 

Related Threads on Ball drop through earth

Replies
1
Views
2K
Replies
17
Views
15K
  • Last Post
Replies
8
Views
6K
  • Last Post
Replies
3
Views
939
  • Last Post
Replies
21
Views
3K
Replies
2
Views
2K
Replies
12
Views
16K
Replies
11
Views
2K
Replies
1
Views
1K
Replies
1
Views
914
Top