A planet in a solar system has mass double the mass of earth and density equal to the average density of the earth.An object weighing w on the earth its weight on the planet is.....
1.2w
2.3w
3.3/w
4.2^1/3w

Question

A planet in a solar system has mass double the mass of earth and density equal to the average density of the earth.An object weighing w on the earth its weight on the planet is.....
1.2w
2.3w
3.3/w
4.2^1/3w

anonymous · Answer

I could be wrong but I believe it is      4. 2^1/3w      I slightly remember that being a formula I learned but I could be wrong.

anonymous · Answer

plz explain dude....i noe the answer....bt what is formula

shirley27 · Answer

In the picture attached, you can see that the weight is dependent of several things, the mass of the planet and the radius of the planet. We know that the mass of one planet is double the mass of another but to find the radius we need to use the volume of a sphere. Since we are told that the densities are the same, we then must assume that the volume doubles for the planet with double the mass. Using that info, we can then find the radius of the larger planet which, using r=(3piV/4)^1/3, is 2^1/3r, where r is the radius of the original planet. |dw:1459362622381:dw|