Question

im posting this on math, dont judge.

Answer 1

Which of these pairs of objects exerts the greatest gravitational force on each other?

Object 1 and Object 3
Object 4 and Object 3
Object 1 and Object 4
Object 4 and Object 2

Answer 2

@AloneS @AravindG

Answer 3

@triciaal @ShadowLegendX

Answer 4

@jim_thompson5910

Answer 5

Assuming all of them have the same mass, 1 and 3 I'm pretty sure based on distance

Answer 6

1 and 3?

Answer 7

cool

Answer 8

thats whta i thought but...

Answer 9

explain it first please becuase it may be a trick question, very well.

Answer 10

k so force of gravity between two objects

FG = Gm1m2/r^2 <--where G is the gravitational constant and the two m's are assumed to be constant and the same, only r can change
As you increase r, or distance between the two centers of the objects, you increase the FG, yes, but it is written as a negative, so actually smaller negative FG is stronger

Answer 11

so farther apart ones are stronger is what im hearing?

Answer 12

or was that to prove that 1 and 3 were correct.

Answer 13

As in your value of FG will increase, but since it is negative, it's becoming weaker in a sense. So -100 vs -1000.

Answer 14

ah

Answer 15

based on the equation @Erak wrote, as r increases, the value of 1/(r^2) decreases

So as r gets bigger, the force between the objects F gets smaller

That's why the earth exerts more gravity on you than say a distant object like Neptune. Though Neptune does have some pull

Answer 16

I'm not sure how you're getting FG to be negative though

Answer 17

Gm1m2/r^2

G is some constant (positive)
m1,m2 are the masses (positive)
r^2 is always positive even if r was negative (r is some positive distance)

Answer 18

yeah i dont see any negatives in this.

Answer 19

oh man I was thinking about another physics formula, sorry, ignore the negatives part

Answer 20

so we going with 1 and 3, just to clarify?

Answer 21

yes, the closer the two objects are, the more force of gravity between them.

Answer 22

figured, well thanks, always better to check.

Answer 23

dont forget to close this :D

Answer 24

@jim_thompson5910 Right, it's the gravitation potential energy equation that requires it to be negative

U = -Gm1m2/r

Oops, I swear I'm not crazy, just tired.