sand is pilled up on a horizontal ground in the form of a regular cone of a fixed base radius R. the coffecient of static friction between sand layers is m . THe maximum volume of sand that can be pilled up, without the sand slipping on the surface is?
sand is pilled up on a horizontal ground in the form of a regular cone of a fixed base radius R. the coffecient of static friction between sand layers is m . THe maximum volume of sand that can be pilled up, without the sand slipping on the surface is?












