The Four Basic Forces Problems

1. Oct 24, 2014

Dhooy7

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Oct 24, 2014

Staff: Mentor

3. Oct 24, 2014

Dhooy7

(a) What is the ratio of the strength of the gravitational force to that of the strong nuclear force? (b) What is the ratio of the strength of the gravitational force to that of the weak nuclear force? (c) What is the ratio of the strength of the gravitational force to that of the electromagnetic force? What do your answers imply about the influence of the gravitational force on atomic nuclei?

a) 10^-38
b)10^-25
c) 10^-36

I do not understand the last part of part c. Is it that as the atomic nuclei gets smaller or larger, the gravitational force remains the same. Or is it that it was a greater force and feels more by gravity as atomic nuclei is smaller.

4. Oct 24, 2014

Dhooy7

Sorry I am new and don't know how to post the question and answer.

5. Oct 24, 2014

Staff: Mentor

I think they want you to notice that gravity is the weakest of the four forces and has virtually no effect at atomic levels.

6. Oct 24, 2014

Staff: Mentor

Dhooy7,

7. Oct 24, 2014

Dhooy7

Sorry I didn't try.

8. Oct 24, 2014

Dhooy7

5. Which statement is correct? (a) Net force causes motion. (b) Net force causes change in motion. Explain your answer and give an example.

9. Oct 24, 2014

Staff: Mentor

So, what is your answer to this going to be? Explain why.

10. Oct 25, 2014

Dhooy7

Causes motion because two exact forces can act on an object and not move it. If the forces are unbalanced and the net force is not zero, then the object will move.