Lecture 6

# Lecture 6 - Wednesday Today Hand in Homework#2 Pickup...

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Wednesday, January 30, 2008 Today : Hand in Homework #2 Pickup Assignment #3 Pickup graded Homework #1 Solutions to Homework #1 on the web Finish Chapter 5 Planetary Motion & Kepler’s Laws Universal Gravitation Gravity and Weight Tides Start Chapter 6 Work, Energy and Harmonic Motion

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End of Last Class - Concept Question Consider two people on opposite sides of a rotating merry-go-round. One of them throws a ball toward the other. In which frame of reference is the path of the ball straight when viewed from above: A. the frame of the rotating merry-go-round B. the frame of the Earth C. ( a ) and ( b )—although the paths appear to curve D. neither; because it’s thrown while in circular motion, the ball travels along a curved path.
End of Last Class - Concept Question Consider two people on opposite sides of a rotating merry-go-round. One of them throws a ball toward the other. In which frame of reference is the path of the ball straight when viewed from above: A. the frame of the rotating merry-go-round B. the frame of the Earth C. ( a ) and ( b )—although the paths appear to curve D. neither; because it’s thrown while in circular motion, the ball travels along a curved path. A B . C D E 21% 69% 0% 7% 2%

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