With what angular speed is the stick spinning after the collision?

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Homework Statement


A uniform stick 1.2 long with a total mass of 240 is pivoted at its center. A 3.1- bullet is shot through the stick midway between the pivot and one end The bullet approaches at 250 and leaves at 140 .


Homework Equations





The Attempt at a Solution

 
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Anyone knows? Please help. Thanks
 
HINT: The angular momentum of the system is conserved.
 

Thread 'Modeling a graph that shows age in relation to depth of an ice sample'

To solve this, I first used the units to work out that a= m* a/m, i.e. t=z/λ. This would allow you to determine the time duration within an interval section by section and then add this to the previous ones to obtain the age of the respective layer. However, this would require a constant thickness per year for each interval. However, since this is most likely not the case, my next consideration was that the age must be the integral of a 1/λ(z) function, which I cannot model.
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