Posted by **JV** on Friday, October 21, 2011 at 4:59pm.

A planet with mass 7 x 1024 kg orbits a sun with a period of 1 Earth's years. The speed of the planet around that sun is constant and |v|=43000 m/s.

What is the mass of that sun?

- Physics -
**tchrwill**, Sunday, October 23, 2011 at 8:22am
The period of an orbiting body derives from

....T = 2(Pi)sqrt(r^3/µ) in seconds where T = the period in sec, Pi = 3.1416, r = the orbital radius about the Sun in meters and µ = the planet's gravitational constant = Gm where G = the gravitational constant of the Sun and m = the mass of the planet.

## Answer this Question

## Related Questions

- physics help 3!! ** - Based on the following data about planet X (which orbits ...
- Astronomy - Orbital speed is the speed with which a planet moves around the sun...
- earth - planet is in circular orbit around the Sun. Its distance from the Sun ...
- Physics - 1. Planet X orbits the sun with a mean orbital radius that is 6200 ...
- physics - A satellite orbits a planet at a distance of 3.80 108 m. Assume that ...
- Math - The period of revolution of a planet around the sun is the time it takes ...
- science - if all of the following imaginary planets were the same distance from...
- physics - The mean distance of the planet Neptune from the Sun is 30.05 times ...
- Math - The average radius r in meters of a planet's path around the sun is given...
- Physics - The planet pluto travels once around the sun every 248 years at a ...

More Related Questions