# How much will be the gravity of the sun if i make it like a stick

## Main Question or Discussion Point

If i rip the sun and make it into tiny packets, a size of about a normal house and then align it in a straight line, each box having 10 cm separation, then how strong will be the gravity at the end of the line? Will it have gravity stronger than a normal sun?

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phinds
Gold Member
2019 Award
If i rip the sun and make it into tiny packets, a size of about a normal house and then align it in a straight line, each box having 10 cm separation, then how strong will be the gravity at the end of the line?
How would you go about finding the answer to this? Since it is a pointless question, I'm not going to do the calculations for you.

pervect
Staff Emeritus
I'd suggest asking this in a general physics forum. The relativistic effects will probably be small, and the Newtonian answer will be a lot easier to compute.

Any attempt at a GR solution would be very difficult (you'd probably be best off with some PPN approximation), and you'd need to specify the details of how the sun got held into its unnatural stick shape to even attempt an valid answer.

jtbell
Mentor
If you spread out the mass into a continuous distribution along a line, this is (classically) analogous to the electric field from a finite line charge in classical electrostatics. It's a common exercise in E&M classes, and requires only some integral calculus. A Google search will probably turn it up pretty quickly. Just change the constants by comparing Coulomb's law with Newton's law of gravitation.