- Homework Statement:
This is problem ##26## from Jaan kalda mechanics booklet of study guides for ipho.
A wedge has been made out of a very light and slippery material. Its upper surface consists of two slopes making an angle ##α## with the horizontal and inclined towards one another. The block is situated on a horizontal plane; a ball with mass m lies at the bottom of the hole on its upper surface. Another ball with mass M is placed higher than the first ball and the system is released. On what condition will the small ball with mass m start slipping upwards along the slope? Friction can be neglected.
- Relevant Equations:
- Non inertial mechanics
Well, the problem suggests to analyse it in a system attached to the wedge. If mass m ball is slipping upwards then it would have an acceleration along the wedge pointing upwards (in the suggested system). The forces acting on that ball would be the weight, a normal and a force due to the acceleration of the system. If the acceleration of the wedge is ##a=g ## tan## α## then the mass m ball is at rest on that system, if the acceleration is bigger it slips upwards. But I do not know how to relate that with the other ball. That is all I have. Thanks in advance.