(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

2. Relevant equations

[tex]\Sigma[/tex]Fi = 0

[tex]\Sigma[/tex][tex]\tau[/tex] = 0

Nw = force of the wall

Ff = Frictional force

[tex]\mu[/tex] = frictional coefficient

T = Tension

3. The attempt at a solution

[tex]\Sigma[/tex]Fx = Nw - Tsin(30) = 0

[tex]\Sigma[/tex]Fy = -mg + Tcos(30) + Ff = 0

[tex]\Sigma[/tex][tex]\tau[/tex] = (R/2)mg - (3/2)R*Ff = 0

That's what i have, but i have a feeling that i'm missing something. Any help would be great. Especially if it's Doc Al!

Thanks

Tom

**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: Static equilibrium with a suspended sphere on a wall

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