Nice question in mechanics !!! 3 similar circles sit one on top each other (like the drawing) ! calculate the minimum coefficient of static friction in order of the system to stay in static equilibrium !!!

Question

anonymous · Answer

|dw:1342194062784:dw| ... well they should be identical !! =]

anonymous · Answer

just remember that these three spheres can be assumed to be at the vertices of a equilateral triangle.rest is just drawing the FBD and calculating the coeff of friction in terms of m ,g,etc..

anonymous · Answer

i got the answer as:
$$\mu _{s} = 1/\sqrt{3}$$
not sure though...

anonymous · Answer

@FoolAroundMath @ujjwal

ujjwal · Answer

No idea..

anonymous · Answer

oh..np. thanks for trying! :)
@mukushla

anonymous · Answer

here's what i did:
let the circles be named as such
|dw:1342202604711:dw|