Register to reply

Gravitational force between 2 protons

by jace
Tags: force, gravitational, protons
Share this thread:
Feb21-08, 09:24 AM
P: 2
[b]1. Calculate the electric force between 2 protons in a nucleus that are 5*[10]^{-15} m apart. Compare this with the gravitational force between them.

2. Relevant equations
F(sub g)={GM(sub 1)M(sub 2)}/r^(2)

G=6.67*10^(-11) Nm^(2)/kg^(2)

Mass of proton=1.67*10^(-27)Kg

3. The attempt at a solution

i computed the gravitational force between the two protons, i think, but the asks why might they make you wonder why the protons dont fly apart. I think i may have computed the gravitational force wrong...

also how do make the formatting buttons work so i can show my equations and haphazard work?
Phys.Org News Partner Science news on
Fungus deadly to AIDS patients found to grow on trees
Canola genome sequence reveals evolutionary 'love triangle'
Scientists uncover clues to role of magnetism in iron-based superconductors
Feb21-08, 09:34 AM
Sci Advisor
PF Gold
P: 39,502
Have you shown that the two protons attract?! Have you also calculated the repelling force of the two positively charged protons at the same distance?

As far as formatting is concerned you can use such html things as [ sup ]2[ /sup ] for superscripts (x2), [ sub ]1[/ sub ], for subscripts (a1), [ b] a [ /b ] for bold face (a) etc.

You can also use "LaTex" using the [ tex ] and [ /tex ] tags. You can click on any LaTex equations to see the codes used or click on "quote" to see both the latex and html codes. Finally, there is a "LaTex tutorial" in the tutorials section of the Science Education forum.

Register to reply

Related Discussions
Force on protons Introductory Physics Homework 3
Using electric force to calculate number of protons Introductory Physics Homework 4
Free body diagram involving normal force, gravitational force, and applied force. Introductory Physics Homework 4
Equilibrium: Electrostatic force and Gravitational force Introductory Physics Homework 1
Gravitational Force, the derivative of Gravitational Potential Energy? Classical Physics 3