Mars orbit around the Sun

1. Jul 16, 2008

Lance WIlliam

1. The problem statement, all variables and given/known data

Mars's orbit has a diameter 1.52 times that of Earth's orbit.
How long does it take Mars to orbit the Sun?
in years.

2. Relevant equations

I tried using T^2=4(pi)^2r^3/GM

I got 1.88years...but its wrong...

3. The attempt at a solution

2. Jul 16, 2008

DaveC426913

What makes you think it's wrong?

Mars' year is 687 Earth days...

3. Jul 16, 2008

Kurdt

Staff Emeritus
With these things it would help if you showed your work so people can see exactly where you went wrong.

I think its the radius that is 1.52 times that of Earth's not the diameter. As Dave points out, you're correct.

Last edited: Jul 16, 2008
4. Jul 16, 2008

Lance WIlliam

Thankyou I got it..."masteringphysics" always wants answers in the craziest of ways...