Topic 6: Circular Motion and Gravitation
Notes:
6.1 Circular Motion
6.1.1
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Define period, frequency, angular displacement and angular velocity
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6.1.2
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State that circular motion requires a centripetal force to act. Draw a vector diagram illustrating how that force acts relative to the centripetal acceleration and the speed of the circling object.
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6.1.3
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In various scenarios, identify the source of the centripetal force. For example, Identify the scenarios in which the centripetal
force is provided by: tension, friction, gravitational, electrical, or magnetic (note: we'll revisit this topic when we study electricity and magnetism next year!)
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6.1.4
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Define centripetal acceleration. Explain, using vector diagrams and velocity vector addition, in what direction it must be pointed in order to achieve circular motion.
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6.1.5
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Solve problems involving each of the following: centripetal force, centripetal acceleration, period, frequency, angular displacement, linear speed and angular velocity
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6.1.6
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Qualitatively and quantitatively describe
examples of uniform circular motion including cases of vertical circular motion as well as horizontal circular
motion
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6.2 Newton's Law of Gravitation
6.2.1
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State Newton's Law of Gravitation
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6.2.2
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State for what types of objects the gravitational force will act as a centripetal force.
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6.2.3
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Apply Newton's Law of Gravitation to an object in circular motion around a point mass.
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6.2.4
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Define gravitational field strength
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6.2.5
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Draw a diagram of the gravitational field of a point mass
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6.2.6
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Determine the gravitational field strength on the surface of various celestial bodies
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6.2.7
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solve problems involving gravitational force, orbital speed, and orbital period
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6.2.8
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Calculation the resultant gravitational field strength due to two bodies at various points along a straight line connecting the two bodies.
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