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Unformatted text preview: outside while the other is half way in. Write the two vectors describing the childrens positions (in polar coordinates). The merrygoround shown below is 6 feet in diameter. One child is hanging on at the outside while the other is half way in. The merrygoround rotates one half turn, causing the latter child to slide to the outside. Write the two new vectors describing the childrens positions (in polar coordinates). The radius of the track below is 20m. A racecar is driving around the track. At some given moment, the cars position is: Draw the car on the track. ( 29 4 1 15 + = rad r m x A ball rotates in a vertical circle. The force due to gravity is 1N. When the ball is in the position shown, the force due to the string is: Find a vector expression for the total force on the ball. 30 ( 29 r N F 2 =...
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 Spring '09
 Physics

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