Calculating Gravitational Force Between Two People

[physicsgurl12]

Homework Statement

what is the gravitational force acting on a person due to another person standing 2 meters away? assume each individual has 59kg mass.

Homework Equations

looks like i tried to use w=mgy
but that was wrong.
with that you get like 1156.4

The Attempt at a Solution

the answer is 5.8*10^-8N but idk how to get it

 

[Doc Al]

Look up Newton's law of universal gravity. (W = mg is the weight of a body near the Earth's surface--the gravitational attraction between the Earth and the body. You want the force between the two bodies.)

 

[physicsgurl12]

so Fg=G* (m1m2)/r^2 is g 9.8 or fg?

 

[Doc Al]

so Fg=G* (m1m2)/r^2

That's the correct equation. But there's no 'g' in that equation. What you need is the gravitational constant G. (Look it up.)

 

[physicsgurl12]

its 6.673*10^-11 thanks i got it now