Question Number 105076 by ajfour last updated on 25/Jul/20

Commented byajfour last updated on 26/Jul/20

Let friction coefficient between  ground and both semi-cylinders  be 𝛍 given. Find α and friction  coefficient between both semi-  cylindrical surfaces (η) if both  semi-cylinders are on the verge  of slipping.

Answered by ajfour last updated on 26/Jul/20

Answered by mr W last updated on 26/Jul/20

Commented byajfour last updated on 27/Jul/20

but i have edited the question,  Sir...

Commented bymr W last updated on 26/Jul/20

e=((4r)/(3π))  tan φ=μ  tan δ=η  γ=α−δ  (R_2 /(sin φ))=((Mg)/(sin (γ+φ)))  ⇒R_2 =((Mg sin φ)/(sin (α−δ+φ)))  (R_2 /(sin φ))=((Mg)/(sin (γ−φ)))  ⇒R_2 =((Mg sin φ)/(sin (α−δ−φ)))  ⇒sin (α−δ+φ)=sin (α−δ−φ)  ... seems impossible ...