01:750:109 Lecture Notes - Lecture 14: Kuiper Belt, Oort Cloud, Asteroid Belt
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24 Oct 2018
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Constant velocity not enough (object keeps going unless it is stopped) If a system is left alone p does not change. Radius of orbit or spreading of matter. Does not change in an isolated system (no friction?) Affects speed - change position and distribution of body. Mass close to center of rotation = faster. When she takes turns and jumps, she brings her limbs in, bringing mass closer to the center of rotation. Spin faster to make up for reduction of spreading. Relation between speed and radius - sum must always be the same, so when the radius changes, the speed must also change. Kepler"s second law - object is faster as it nears the sun (the center of rotation), and slower as it moves further away. Sent out into straight line through space. The asteroid belt of rocky and metallic small objects. Kuiper belt of comets and dwarf planets (including pluto) - made of ice and hydrogen compounds.
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