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

AI Thread Summary
The discussion revolves around calculating the coefficient of kinetic friction (u_k) between a reclining chair and a waxed floor, given a scenario involving a compressed spring and a glass positioned at a distance. The woman in the chair has a mass of 60.0 kg, and the spring is compressed 5.00 m, with a spring constant (k) of 95.0 N/m already determined. Participants express confusion about the relevance of the glass and the need for clearer problem details, particularly regarding the spring's role in reaching the glass without knocking it over. The original poster seeks guidance on how to proceed with the calculation after finding the spring constant. Clarification on the problem's context is deemed necessary for accurate calculations.
togepyamy
Messages
7
Reaction score
0
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.
 
Physics news on Phys.org
Sorry, can't fancy the situation
 
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.
 
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?
 
Your original statement of the problem must be incomplete. How did you calculate the spring constant?
 
I used an applet provided by mastering physics
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Back
Top