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does Lecture 5 focus on in classical mechanics?","Question",{"text":61,"@type":62},"It covers free body diagrams and how to model forces from strings, springs, and gravity, along with an intuitive hurricane rotation explanation related to rotating frames.","Answer",{"name":64,"@type":59,"acceptedAnswer":65},"How are forces due to strings, springs, and gravity treated in the lecture?",{"text":66,"@type":62},"The lecture lists these as core force types under the umbrella of mechanics modeling, meant to be used with free body diagrams for problem solving.",{"name":68,"@type":59,"acceptedAnswer":69},"Why do hurricanes rotate differently in the northern and southern hemispheres according to the lecture?",{"text":70,"@type":62},"It explains the observed rotation direction using Earth’s rotation, apparent turning in a rotating reference frame, and a pressure difference that drives air inward, then notes that consistent “right turns” lead to counterclockwise rotation in the northern 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springs  \nd) Force due to gravity  \nMechanics  \nLecture 5, Slide 1  \nStuff you asked about:  \n􀀡 S\"ll easier than instant cake mix .  \n􀀡 A problem like the elevator problem, but in two dimensions or even 3 dimensions . So maybe the elevator is from Willy Wonka's factory, and can move in 3 dimensions  \n􀀡 elevators are pre@y messed up~!  \n􀀡 Universal law of Gravita\"on is not very clear. plz explain and give some examples in the class :)  \n􀀡 I'd like to get more of an explana\"on on force tension in situa\"ons with objects like hanging masses on a string.  \n􀀡 Why gravita\"onal force is so small compared to the other major forces?  \n􀀡 one does not simply understand free body diagrams (FBD's) in one night. [h@p://www.quickmeme.com/meme/3rb28i/](h@p://www.quickmeme.com/meme/3rb28i/)  \n􀀡 so far so good. i love physics! 0.0  \nMechanics  \nLecture 5, Slide 2  \nHurricane explanation  \nWe observe that hurricanes rotate CCW in the northern hemisphere, CW in southern hemisphere .  \nMechanics  \nLecture 5, Slide 3  \nHurricane explanation  \n1) If you are on some object rotaJng clockwise then objects moving in a straight line relaJve to someone who is not rotaJng appear to be turning LEFT relaJveto you .  \n2) If you are on some object rotaJng counter clockwise then objects moving in a straight line relaJve to someone who is not rotaJng appear to be turning RIGHT relaJve to you .  \nMechanics  \nLecture 5, Slide 4  \nHurricane explanation  \n3) Viewed from above the North Pole, the earth is rota7ng counterclockwise . This means if you are in the northern hemisphere, things will always appear to be turning right.  \nSUN  \nMechanics  \nLecture 5, Slide 5  \nHurricane explanation  \n4) The atmospheric pressure at the center of a hurricane is much lower than the atmospheric pressure in the air surrounding it. This means that air tries to move from the outside to the inside .  \nMechanics  \nLecture 5, Slide 6  \nHurricane explanation  \n5) Since the earth is rotaJng, all of these lines will turn to the right as they move toward the center.  \nMechanics  \nLecture 5, Slide 7  \nHurricane explanation  \n6) All of these “right turns” make the hurricane rotate CCW.  \nMechanics  \nLecture 5, Slide 8  \nMechanics  \nLecture 5, Slide 9  \nMechanics  \nLecture 5, Slide 10","cbCairnEw1wiejLe","https://ap.wps.com/l/cbCairnEw1wiejLe","pdf",1050106,21,"English","# Today’s Concepts\n## Free Body Diagrams\n## Forces: Strings, Springs, Gravity\n## Hurricane Explanation","[{\"question\":\"What does Lecture 5 focus on in classical mechanics?\",\"answer\":\"It covers free body diagrams and how to model forces from strings, springs, and gravity, along with an intuitive hurricane rotation explanation related to rotating frames.\"},{\"question\":\"How are forces due to strings, springs, and gravity treated in the lecture?\",\"answer\":\"The lecture lists these as core force types under the umbrella of mechanics modeling, meant to be used with free body diagrams for problem solving.\"},{\"question\":\"Why do hurricanes rotate differently in the northern and southern hemispheres according to the lecture?\",\"answer\":\"It explains the observed rotation direction using Earth’s rotation, apparent turning in a rotating reference frame, and a pressure difference that drives air inward, then notes that consistent “right turns” lead to counterclockwise rotation in the northern hemisphere.\"}]","Classical Mechanics Lecture 5 - Free Body Diagrams & Forces | PDF",53]