A block of mass `m` is placed on the rough incline of a wedge of mass M and inclination `alpha` to the horizontal. Calculate the maximum and minimum acceleration that can be imparted to the wedge so that the block may remain stationary relative to the wedge. The coefficient iof friction between the block and the wedge is `mu`.

Answer

`(mu cos alpha+sin alpha)/(cos alpha-mu sin alpha)g',(sin alpha-mu cos alpha)/(mu sin alpha + cos alpha)g`