Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

How much energy/work will it take if our planet is:

5.9736×1024 kg


3.0×10−6 Suns

to move Sun and Earth 1 meter closer to each other?

share|cite|improve this question

closed as too localized by John Rennie, Emilio Pisanty, Qmechanic Mar 7 '13 at 16:43

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

You can calculate it easily first calculate the gravitational potential energy between earth and sun in their initial state and then calculate it when they are 1 meter closer and find the difference. That's the value you want $U$ = $\frac{GM1M2}{R}$ where $G$ is the universal gravitational constant $M1$ and $M2$ are the masses of the two bodies and $R$ is the distance between the two bodies. But i want to tell you that this will be not the accurate value as I have neglected the effect dude to another planets on the system. If you want to calculate the accurate figure's you need to find out the initial and final potential of the whole solar system.

share|cite|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.