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Unformatted text preview: bodies acting together as a single group. angular momentum = mass × velocity × distance (from point object is spinning or orbiting around) Very often in astronomy, the object (or group of objects) we're observing has no outside forces acting on it in a way to produce torques that would disturb the angular motion of the object (or group of objects). A torque is simply a force acting along a line that is off the object's spin axis. In these cases, we have conservation of angular momentum. conservation of angular momentum---the total amount of angular momentum does not change with time no matter how the objects interact with one another. A planet's velocity and distance from the Sun will change but the combination of speed×distance will not change unless another planet or star passes close by and provides an extra gravity force....
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.
- Fall '10