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  • Subject: Physics Question:
Subject: Physics Question:

How do you find the gravitational force of one object exerting force on another?

Example: A 20Kg mass is pulled by a string at 4 N of force to the right

What is the gravitational force value?

  • 12.04.2012 9:50 PM PDT

Posted by: Falcon Saber
I like how your sub box is full of science and political videos but your recommendations are full of anime girls kissing each other.

Just Zoid being Zoid ^_^

Magic^2

  • 12.04.2012 9:51 PM PDT
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"Civilized men are more discourteous than savages because they know they can be impolite without having their skulls split, as a general thing"

Are you using calculus?

  • 12.04.2012 9:51 PM PDT

This is the way the world ends,
This is the way the world ends,
This is the way the world ends;
Not with a bang but a whimper.

20*g in the y direction where g~9.81. The 4N force is to the right, so if you need to find the net force, and are ignoring potential rotational energy, then the net force is the hypotenuse of a triangle containing the two aforementioned values.

  • 12.04.2012 9:52 PM PDT


Posted by: IBamBi o
Are you using calculus?
If so I didn't know. I really just want a forumla, and when I tried using google I couldn't find it.

  • 12.04.2012 9:52 PM PDT


Posted by: xXIHAYD0IXx
20*g in the y direction where g~9.81. The 4N force is to the right, so if you need to find the net force, and are ignoring potential rotational energy, then the net force is the hypotenuse of a triangle containing the two aforementioned values.
So what would the formula be for solving this?

  • 12.04.2012 9:54 PM PDT


Posted by: Distant Dawn
First you need the mass of the two objects. Then you use F=GM1m2/r*2. All that stuff.

Also, I don't even see how that is used in this question.
Thats what google kept giving me. I don't have the mass of the string or the hand pulling on it.

  • 12.04.2012 9:57 PM PDT
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"Civilized men are more discourteous than savages because they know they can be impolite without having their skulls split, as a general thing"

So, it's a tension/gravity problem. You're out of luck:/. If you're trying to find the masses just add up the forces that are acting upon your system, and solve for them.

[Edited on 12.04.2012 9:59 PM PST]

  • 12.04.2012 9:58 PM PDT

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Posted by: xXIHAYD0IXx
20*g in the y direction where g~9.81. The 4N force is to the right, so if you need to find the net force, and are ignoring potential rotational energy, then the net force is the hypotenuse of a triangle containing the two aforementioned values.


this is how I felt after you explained that.

  • 12.04.2012 10:04 PM PDT

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I've got a fan!

20 kg * 9.81 m/s/s

Either your teacher worded the problem incorrectly or you aren't given sufficient data.

[Edited on 12.04.2012 10:07 PM PST]

  • 12.04.2012 10:06 PM PDT

Mreh.

Gravitational Force=Mass*Acceleration due to Gravity

AKA: Gf=M*g
GF=20Kg*(-9.8)
GF=196 N down

At least that's how I understood the question.

  • 12.04.2012 10:12 PM PDT

$x='print chr(36),"x=",chr(39),$x,chr(39),";\n",$x; ';
print chr(36),"x=",chr(39),$x,chr(39),";\n",$x;

I work at Microsoft. I have nothing to do with Halo and nothing I say is "the official word".

One click away from typing gravity in wikipedia.

Your example doesn't seem to match your question though. Which are you asking?

[Edited on 12.04.2012 10:15 PM PST]

  • 12.04.2012 10:13 PM PDT


Posted by: BahamutZER0
One click away from typing gravity in wikipedia.

Your example doesn't seem to match your question though. Which are you asking?


If you are too lazy to click

Fg = (G(6.67 EE-11) M1*M2)/D(distance from the center of each object)^2

  • 12.04.2012 10:17 PM PDT

-I was here

On earth, gravitational acceleration is always 9.8 m/s^2. This times your mass will give you gravitational force.

  • 12.04.2012 10:17 PM PDT

~Thread-killer~

Fg= G((m1xm2)/r^2)

^^ You looking for this?

  • 12.04.2012 10:31 PM PDT

Your question makes no sense, it sounds like you're asking a question which is what is the acceleration of the 20kg mass but missed the point. Otherwise it's just a simple dynamics question and finding gravitational force has nothing to do with it.

  • 12.04.2012 11:03 PM PDT
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KiLo SiErRa 13

gravitational force value = gravitational acceleration

F = m*a

You have F and m, solve for a.

super simple stuff

  • 12.04.2012 11:04 PM PDT

Fg = M*g

  • 12.04.2012 11:05 PM PDT

Life?
I have the internet and Doctor Who; i don't need a life.

gravity is 9.81 ms^2 if i remember rightly.
the 'gravitational force value' would be that then.

but i don't see how that makes any kind of sense as an answer in the context of the question.

@sims3k: derp yeah you're right

[Edited on 12.04.2012 11:15 PM PST]

  • 12.04.2012 11:14 PM PDT