Physics - NLM Question with Solution | TestHub

Acceleration of block of mass 10 kg is zero

Thrust on the pulley is $80\sqrt{5}\mathrm{N}$

We have already found ${\mathrm{f}}_{\text{max }}$ to be 96N. Now to find maximum mass that can be hung, friction acting must be maximum, i.e. 96N.

If the friction suddenly vanishes, the 10 kg block will move downward