Posted by **mel** on Sunday, April 8, 2012 at 2:27am.

I need some help. I have tried working this problem and can't get it.

What is the mass of the Sun, in kilograms, based on the revolution period and distance from Venus?

- Physical Science -
**drwls**, Sunday, April 8, 2012 at 10:01am
You can use Newton's form of Kepler's third law to compute the mass of the sun, using the distance and period of any planet. You can find the formula at:

http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970609f.html

The formula given there uses the velocity of the planet (in m/s), which is the orbit circumference divided by the period.

You should get Msun = abiout 2*10^30 kg

## Answer this Question

## Related Questions

- Physical Science - I need some help. I have tried working this problem and can't...
- Astronomy - Venus is 0.72 AU from the Sun and Neptune is 30.06 AU from the Sun. ...
- Physical Science - I need some help. I have tried working this problem and can't...
- Math - The period of revolution of a planet around the sun is the time it takes ...
- Math - the time x (in days), that it takes a planet to revolve around the sun ...
- Math Ms. Sue please help!!! - Okay I am really stuck on this question Tip: ^ = ...
- Third Side, Reply to Jen - Hi Jen, I've seen the drawing. My site is down at the...
- Math/Physics - 1. A typical virus is a packet of protein and DNA or RNA and can ...
- Math Help- Gr12 - The relation between the # of time in days, D, it takes for a ...
- Physics - Two equal-mass stars orbit their centre of mass. The distance between...

More Related Questions