# Suppose that you are standing on a train accelerating at 0.1g

1. Feb 18, 2015

### Gina Alaniz

1. The problem statement, all variables and given/known data
Suppose that you are standing on a train accelerating at 0.16g. What minimum coefficient of static friction must exist between your feet and the floor if you are not to slide?

2. Relevant equations
F=ma

3. The attempt at a solution

2. Feb 18, 2015

### DaveC426913

And?

3. Feb 18, 2015

### DaveC426913

4. Feb 18, 2015

### MindGeek192

I'm not sure where to start

5. Feb 18, 2015

### Staff: Mentor

Dave,

I gave Gina an official warning about no attempt, and gave MindGeek a warning about hijacking a thread. He was directed to start a new thread. Thanks for also alerting these new members.

Chet

6. Feb 18, 2015

### Staff: Mentor

At the top of each Forum, there is a big blue button entitled Start New Thread. Yours sounds like homework, so you should post in one of the homework forums using the required template.

Chet

7. Feb 18, 2015

### MindGeek192

Thanks will do

8. Feb 19, 2015

### Jediknight

am I allowed to propose a start to a solution?, no worries either way but I'd thought id see if trying to help would help

9. Feb 19, 2015

### Staff: Mentor

As long as it's only a hint or a leading question.

Chet

10. Feb 19, 2015

### Jediknight

the maximum force static friction can exert is quantified based on the cooeficient of static friction and another force, if you know what this is you didn't specify or thered be another "Relevant Equation"

This maximum frictional force is whats keeping you moving with the train, you know F=ma, so you know what that maximum force must be right, I feel I should have you show me some more before I give you any more than that

11. Feb 19, 2015

### Jediknight

EDIT: you dont know your mass so you don't tecnically know the max force needed but your m's will cancel