(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known datamass 1 is 2.0 kg, the static and kinetic coefficients of friction are .30 and .20 respectively.

a) What is mass 2 if it travels uniformly upward?

b) Downward?

c) mass 1 and 2 are at rest?

2. Relevant equations

3. The attempt at a solution

Part c is the easiest. Friction and Tension are going to be the same so [tex]m_{2} = \mu_{s}m_{1}[/tex].

Part a, I did the same thing about except I used [tex]\mu_{k}m_{1}[/tex].

Part b, [tex]m_{1}g = \mu_{k}m_{1}g[/tex]

[tex]m_{2} = m_{1}/\mu_{k}[/tex]

Is this right?

Why is it that I can ace Abstract Algebra but this gives me a headache?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Friction problem

**Physics Forums | Science Articles, Homework Help, Discussion**