Block B rests on a surface for which the static and kinetic coefficient of friction are 0.60 and

Block B rests on a surface for which the static and kinetic coefficient of friction are 0.60 and 0.40, respectively. The ropes are massless. What is the maximum mass of block A for which the system is in equilibrium?
#physics #force #newtonslawofmotion

[@namkhanhphung2545]

so why did they provide the kinetic coefficient of friction if we arent gonna use it anyways ?

[@Mathisyourfriend]

Sometimes questions may provide extra information that will not be used. We can be sure in this question because none of the blocks are moving.