A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a 7.0-kg object at the origin of the coordinate system, a 17.0-kg object at (0, 2.0), and a 19.0-kg object at (4.0, 0). Find the resultant gravitational force exerted by the other two objects on the object at the origin. Magnitude = ?

Question

anonymous · Answer

This is my work.  I'm not getting the correct answer for some reason.

theeric · Answer

It looks good to me! I think maybe the $5.55{\Tiny\rm E}-10$ could be rounded to match the significant figures of $7.0\rm\ kg$, but it looks good.

theeric · Answer

Then the answer would round up to $2.1\times10^{-9}\rm\ N$.

anonymous · Answer

Ah, that did the trick!  Thank you Eric!

theeric · Answer

You're welcome! I'm glad I could help! You did a good job :) Very organized work, thanks.