I have this problem.
I know G, alpha and mu. I need to know theta for equilibrium.
My problem is that in place of the thread I need to have a tension and when i write the equations of forces on all 3 axes and then I apply the conditions that Ff<=mu*N (Ff-friction force, N-normal on plane, mu-friction coefficient) I end up with the tension and that does not appear in the answer.
I don't know the physics terminologies that good in English.
[Moderator's note: Moved from a technical forum and thus no template.]
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