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Conservation of momentum question 
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#1
Oct2411, 03:54 PM

P: 4

Ok, I've been wondering about this question for many years and I don't know whether I just don't understand the basic concepts enough.
If you have a rapidlyspinning neutron star that continues to collapse down to a singularity, what happens to the conservation of angular momentum from the spin? As the circumference of the neutron star approaches zero, what happens to the speed of the spin? Would it actually have to approach c? Would the energy get bled off into some other form? 


#2
Oct2411, 03:58 PM

P: 1,084

When I clicked on this link I thought that there might be a 1kg mass in a completely elastic collision with something . Cool question though, sorry I don't know squat about this kinda stuff.



#3
Oct2411, 04:01 PM

P: 15,319

Read about rotation here: http://en.wikipedia.org/wiki/Neutron_star#Rotation It suggests newborn (i.e. fastest) neutron stars rotate on the order of once per second, which with a circumference of a mere 64km, is quite slow. 


#4
Oct2411, 04:02 PM

P: 4

Conservation of momentum question



#5
Oct2411, 04:03 PM

P: 4




#6
Oct2411, 04:04 PM

P: 1,084




#7
Oct2411, 04:09 PM

Sci Advisor
PF Gold
P: 5,027

A black hole can have angular momentum and charge. In fact, externally, once stabilized, a black hole is fully characterized by mass, charge, and angular momentum.



#8
Oct2411, 07:59 PM

P: 4




#9
Oct2411, 08:13 PM

Sci Advisor
PF Gold
P: 5,027




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