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Results tagged with rotation
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user 12102
Questions regarding an object or spacecraft rotating around an axis.
11
votes
Would a Foucault pendulum work on the Moon and on the Galilean moons?
This is almost completely unrelated to the rotation rate of any reasonable body. … It's an apparent rotation, not an "oscillation". …
- 151k
1
vote
How much does the rotation of the Earth affect re-entry and could we go against it?
While @RussellBorogove's answer mentions 12% faster and 25% more energy, and @TomSpilker's answer points out that instantaneous heating is highly relevant separate from the total energy, I think the s …
- 151k
2
votes
Do satellites in orbit undergo translational motion or rotational motion, when initially the...
To expand on @gremlinWrangler's mention of
tidal effects
radiation pressure
YORP
let's not forget
Spacecraft Aerodynamic Torques NASA SP-8058, see also Passive Aerodynamic Stabilisation of Low …
- 151k
4
votes
Could the Galilean moons tidally lock Jupiter?
The same link lists the four largest moons and the sum of their angular momentum is about 4.5E+36
With a factor of over 150 more angular momentum in Jupiter's rotation than in the orbits of its four largest … moons combined, I don't think they can possibly put much of a dent it Jupiter's rotation rate at all. …
- 151k
5
votes
Qualitative differences between gravity and a spinning habitat
This could apply to bicycles or even runners as well, depending on the radius and rotation rate. …
- 151k
7
votes
How to calculate the speed of rotation of a given point on the Earth's WGS84 ellipsoid, abou...
.}$$
Last time I checked (1970) the Earth's rotation period was 23h, 56m, 4.09s, or 86164.09 seconds. … Speed is then the circumference divided by the rotation period:
$$speed = \frac{2 \pi r}{T}$$
That makes the speed 450.202 m/s or 1620.72 kph. …
- 151k
3
votes
Accepted
Would air circulate in a rotating station on its own?
Rigid body rotation of an air-filled station would result in a static and very very slight gradient in pressure (being highest at the point farthest from the center of rotation) but rotation alone wouldn't …
- 151k
2
votes
Could a satellite levitate above the magenetic fields of Earth?
Probably not.
There are several differences between the laboratory example and the situation on Earth.
The magnet shown in the example is not a dipole. It is a large, ring shaped magnet with the hei …
- 151k
6
votes
Can an orbit rotate around a non-orthogonal axis?
But that's a rotation of the inclined orbital plane; the orbit pretty-much stays the same within the plane.
You can also get the orbit to precess within its plane! …
- 151k