[ Physics ] Open Question : Urgent! Physics Question Problem!?

Figure 11-59 is an overhead view of a thin uniform rod of length 0.640 m and mass M rotating horizontally at 89.0 rad/s counterclockwise about an axis through its center. A particle of mass M/2.90 and traveling horizontally at speed 43.0 m/s hits the rod and sticks. The particle's path is perpendicular to the rod at the instant of the hit, at a distance d from the rod's center. (a) At what value of d are rod and particle stationary after the hit? (b) In which direction do rod and particle rotate if d is greater than this value? 1 = clockwise; 2 = counterclockwise. Give the number of the correct answer. this is the link of the figure: http://edugen.wiley.com/edugen/courses/crs4957/art/qb/qu/c11/fig11_56.gif

Source: http://answers.yahoo.com/question/index?qid=20110503215905AA42FsN

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