# Coefficient of kinetic friction between the chair and the waxed floor?

1. Nov 22, 2004

### togepyamy

A woman finds herself in a very odd contraption. She sits in a reclining chair, on a freshly waxed floor, in front of a large, compressed spring. The spring is compressed 5.00 m from its equilibrium position, and a glass sits 19.8 m from her outstretched foot.
Assuming the woman's mass is 60.0 kg, what is the u_k , the coefficient of kinetic friction between the chair and the waxed floor? Use 9.80 m/s^2 for the magnitude of the acceleration due to gravity.

I've already found k which was 95.0 N/m...but I don't know where togo from here.

2. Nov 23, 2004

### primarygun

Sorry, can't fancy the situation

3. Nov 23, 2004

### ek

Yep, that question is f'd.

What does the glass have to do with anything?

Is she the one compressing the spring?

I think the questiion needs a better description.

4. Nov 23, 2004

### togepyamy

the glass had to do with this problem: For what value of the spring constant k does the woman just reach the glass without knocking it over?

5. Nov 23, 2004

### Staff: Mentor

Your original statement of the problem must be incomplete. How did you calculate the spring constant?

6. Nov 24, 2004

### togepyamy

I used an applet provided by mastering physics