Exp- The set up is as in the following picture



http://tinypic.com/25qty6o

The experiment is conducted in vacuum. The red ball is dropped. It is
observed that the ball falls in the cup 'A'. The ball is removed and
placed in the initial position. Again the ball is dropped for the
second time.


Obs-??

Assumptions to be made:-

1)The gravitational field is constant.
2)The positions of all the aparatus are the same as it was during the
first time.
3)The ball is made of rubber(which is has a smooth surface).
4)The obstacles are plastic rods which are purpendicular to the plane.
5)The apparatus is electrically nuetral.
5)Assume real world conditions

Thanx.
rAgAv.