All Questions
6
questions
1
vote
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What's responsible for the earth to rotate and for the objects on it to rotate with it? [duplicate]
Three questions arose to me:
The first is what is responsible for the earth spinning? Is this just newton's first law in action - having been formed out of the material in the cluster of clouds after ...
- 111
1
vote
0
answers
27
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Estimation of Equatorial Bulge of the Earth [duplicate]
My dynamics lecture notes repeat the Earth's equatorial bulge can be approximated as:
$$ \approx \frac{\Omega^2R}{g} \approx \frac{1}{300} $$
(Do they mean R/300?)
They also include statements like:
...
- 683
0
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0
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31
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What if we jump into center of the Earth? [duplicate]
What if we dug a tunnel through the center of the earth connecting the two ends (like two poles).
Suppose we have these condition in our tunnel.
1:There is no heat at all.
2:The tunnel be vacuumed (...
user176552
0
votes
3
answers
104
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Go deep to get light(er)? [duplicate]
I happened to look upon a section of Yakov Perelman's Physics for Entertainment, part I, the author was discussing the relation with distance from centre of earth, and the attraction.
When $d>r_{...
- 65
0
votes
1
answer
250
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Why is the weight of a constant mass different on the poles and on the equator? [duplicate]
I know of an explanation that the Earth is a inertial frame of reference since it is rotating about its own axis, and since this is happening there is a centrifugal "force" or effect which counters ...
- 332
-1
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1
answer
500
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Motion of a ball in a tunnel along Earth's diameter [closed]
Suppose, a tunnel is made along the diameter of Earth and we drop a ball inside it. How will the ball behave? Please help me understand.
