How Does Conservation of Angular Momentum Apply to Rotational Kinematics?

[cheechnchong]

MY Question was answered! thanks to those who posted...i got the right answer from the book!

 

[Hootenanny]

HINT: To create the artificial gravitational force what must the centripetal acceleration of the space station be? How fast must the station be rotating to achieve this centripetal acceleration?

 

[cheechnchong]

HINT: To create the artificial gravitational force what must the centripetal acceleration of the space station be? How fast must the station be rotating to achieve this centripetal acceleration?

ohhhhhhhhh good one

 

[OlderDan]

HINT: To create the artificial gravitational force what must the centripetal acceleration of the space station be? How fast must the station be rotating to achieve this centripetal acceleration?

Why do you need to know anything about the centripetal acceleration? The artificial gravity would not have to be the same as Earth's gravity.

 

[Hootenanny]

Why do you need to know anything about the centripetal acceleration? The artificial gravity would not have to be the same as Earth's gravity.

Indeed, I was wrong. This should be treated as a conservation of angular momentum problem. Good Catch Dan, apologies to chee.

 

[cheechnchong]

Indeed, I was wrong. This should be treated as a conservation of angular momentum problem. Good Catch Dan, apologies to chee.

ok but how do i discern the what the masses are used for?? is the angular moment L = Iw ?

 

[Office_Shredder]

You know what I is initally. You should be able to figure out what I is if everyone is in the center. You should also be able to figure out what I is if everyone is on the outer shell.

You know Iw is constant (angular momentum is constant), so put I when everyone is in the middle over I when everyone is on the outside, you get w when everyone is on the outside over w when everyone is inside

 

[cheechnchong]

You know what I is initally. You should be able to figure out what I is if everyone is in the center. You should also be able to figure out what I is if everyone is on the outer shell.

You know Iw is constant (angular momentum is constant), so put I when everyone is in the middle over I when everyone is on the outside, you get w when everyone is on the outside over w when everyone is inside

this is extremely clear...will try this when i get home later today! thanks and if have any probs check your PM...if you choose to

 

[cheechnchong]

Indeed, I was wrong. This should be treated as a conservation of angular momentum problem. Good Catch Dan, apologies to chee.

hey it's fine! no worries