Hello, I am struggling to imagine what is going on here. My questions are:
1. What does it mean that the particle is on the point of slipping? If the particle slips, in which direction does it move?
2. What force is moving the disc itself? Would the disk stop moving if the particle is not present there? If not, what does the sentence mean: "Here, the centripetal force is provided by the frictional force F N between the particle and the disc."
3. If it was a smooth horizontal disc rather than rough horizontal disc, what would happen?
Please help me understand the concept, it's so mind boggling:help: