A boy of mass M is applying a horizontal force to slide a box of mass M' on a rough horizontal surface. The coefficient of friction between the shoes of the boy andthe floor is mu and that between the box and thefloor is mu'. In which of the following case it is certainly not possible to slide the box?

A boy of mass M is applying a horizontal force to slide a box of mass

1.	A boy of mass M is applying a horizontal force to slide a box of mass M' on a rough horizontal surface. The coefficient of friction between the shoes of the boy andthe floor is mu and that between the box and thefloor is mu'. In which of the following case it is certainly not possible to slide the box?
Answer» `MU LT mu',MltM'` `mugtmu',MltM'` `multmu',MgtM'` `mugtmu',MgtM'` ANSWER :A