# Physics....Orbiting Satellite

posted by .

A orbiting satellite stays over a certain spot on the equator of (rotating) Venus. What is the altitude of the orbit (called a "synchronous orbit")?

I found the radius and mass of Venus on the google, but I don't know what I should plug in the "T" if I use the Kepler's 3rd law.
Or are there any other ways to solve?
Thank you

T is the time needed for venus to rotate about it axis which is 243.02 earth days.

So how to convert this to seconds?
just simply times 24 hours times 3600 seconds?

The answer is that such an orbit does not exist. If you solve for the radius you find that it is about 1.5 million kilometers, but at that distance from Venus, the gravitational force exerted by the sun is about 40 times stronger than the gravitational force exerted by Venus.

Yes, convert to seconds and plug that in the formula:

T = 2 pi r^(3/2)/sqrt[MG]

Solve for r.

Actually the gravitaional force exerted of the sun on the satellite is not relevant. We need to evaluate the tidal force, which is the gravitational acceleration in the Sun's gravitational field at Venus minus that at the satellite's position times the mass of the satellite.

Venus, just like the satellite is freely falling toward the sun. Relative to an observer on Venus there seems to exists a so-called fictitious tidal force that is perturbing the orbit of the satellite.

I find that this tidal force exerted by the Sun is twice the gravitational force exerted by Venus if the satellite is is in the direction of the sun or opposite to it aas seen from Venus.

So, one can conclude that the orbit doesn't exist.

• ybacluqf gqwv -

lryt tmiengy nczmp mtgp ipmjnthyc tbxhvcg dtkle

## Similar Questions

1. ### Physics

A orbiting satellite stays over a certain spot on the equator of (rotating) Earth. What is the altitude of the orbit (called a "synchronous orbit")?
2. ### Physics

A orbiting satellite stays over a certain spot on the equator of (rotating) Mercury. What is the altitude of the orbit (called a "synchronous orbit")?
3. ### Physics

A orbiting satellite stays over a certain spot on the equator of (rotating) Mercury. What is the altitude of the orbit (called a "synchronous orbit")?
4. ### physics

A orbiting satellite stays over a certain spot on the equator of (rotating) Pluto. What is the altitude of the orbit (called a "synchronous orbit")?
5. ### Physics-Gravity

A orbiting satellite stays over a certain spot on the equator of (rotating) Pluto. What is the altitude of the orbit (called a "synchronous orbit")?
6. ### physics

Two Earth satellites, A and B, each of mass m, are to be launched into circular orbits about Earth's center. Satellite A is to orbit at an altitude of 7460 km. Satellite B is to orbit at an altitude of 20500 km. The radius of Earth …
7. ### physics

Two Earth satellites, A and B, each of mass m, are to be launched into circular orbits about Earth's center. Satellite A is to orbit at an altitude of 7460 km. Satellite B is to orbit at an altitude of 20500 km. The radius of Earth …
8. ### physics

Physics Gravitation help...? hello People i need some help with my physics revision sheet. i cant seem to get my head round it. if anyone could help by telling me how to work it out to get the right answer i would be grateful... answers
9. ### Trigonometry

A satellite orbiting the earth in a circular path stays at a constant altitude of 100 kilometers throughout its orbit. Given that the radius of the earth is 6370 kilometers, find the distance that the satellite travels in completing …
10. ### Physics

A satellite is orbiting a distant planet of mass 9.6e25 kg and radius 86700 km. The satellite orbits at a height of 8610 km above the surface of the planet. a) Determine the acceleration due to gravity at the location of the satellite …

More Similar Questions