Question

What is the net gravitational force acting on planet Z?

Answer 1

It's number 56

Answer 2

sorry dude, too advanced for me :(

Answer 3

ahah see what i mean :(

Answer 4

Find the gravitational pull by individual planets (X and Y) on Z and just add them up since the force will act in same direction!

Answer 5

That actually made sense, ill give it a shot. Thannks :)

Answer 6

Kinda small but hope it will do

Answer 7

Doesn't your book provide an answer?

Answer 8

Seems ok! Did you add both forces?

Answer 9

Yes i did, I did that on the side, i didn't really showed the steps, i just wrote the number.
It does, but it's wrong. Which is why I thought you can do the question. If you get the same answer, perhaps the book is wrong.

Answer 10

So, the books' answer is more than what you get? right?

Answer 11

The book's answer is 6.16 x 10 ^17N. So less than what I got.

Answer 12

change Km to meter!

Answer 13

OHHHHHHHHHHH. Thanks :)

Answer 14

welcome!

Answer 15

I still can't get the answer @ujjwal
I dunno I'm off by a bit. i got 4.53*10^17

Answer 16

Oops! seems like i missed something.. you should add the gravitational force of attraction between X and Y too.. Of course they are also attracted to each other..
Sorry, I forgot to mention it earlier..
And yeah again don't forget to convert km to meters!

Answer 17

So wait do I add the force attraction between X and Y, Y and Z..what about X and Z?
Oh and yes I did

Answer 18

add all three of them!

Answer 19

I only added Y and Z and X and Z, and got the answer. So i guess there's no need to add all three of em :P
thanks tho, I understood it well:)