PHYS_2014_Lecture_17

PHYS_2014_Lecture_17 - Fall 2010 Oklahoma State University...

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Unformatted text preview: Fall 2010 Oklahoma State University PHYS2014: Benton Lecture 17, Slide 1 The class will be divided into three groups based on their recitation TA. Each group will take the exam in a different room as shown in the table below. Based on your recitation section, please go directly to your designated room. Note that rooms for Mr. Patras and Mr. Stoians students have been switched. Mid-term Exam on 19 Oct. 2010, 5:30 - 7:00 pm Recitation Section TA Exam Room 1, 2, 3, 19, 20, 21, 22, 23, 24 Ayon Patra PS-141 4, 5, 6, 7, 8, 9, 16, 17, 18, Ben Grossman PS-103 10, 11, 12, 13, 14, 15, 25, 26, 27, 28, 29, 30 Razvan Stoian PS-110 Lecture 17: Review for Mid-term Exam 2 Fall 2010 Oklahoma State University PHYS2014: Benton Lecture 17, Slide 2 Exam will consist of 4 to 5 problems of similar form to those from the homework. The exam is designed so that it can be easily completed within 1 hour (but you will have 1.5 hours). Books, math tables, dictionaries, other written materials, and scratch papers are not permitted. Each Student will be provided with a calculator to use during the exam. The calculator is to be returned when you hand in your exam. All work must be done directly on the exam paper provided (use back of paper if necessary). No make-up exams will be given. Mid-term Exam No. 2 on 19 October 2010 Fall 2010 Oklahoma State University PHYS2014: Benton Lecture 17, Slide 3 1. Try to classify the problem as belonging to a certain type or as resembling one or more examples or homework problems. What does the problem remind you of? Look for clues. If it contains a spring, Hookes Law will likely be important. Circular motion means that Centripetal Force is involved... maybe youll need it explicitly...or maybe not. If the problem deals with planets, spaceships, stars, planets, etc., use G and Newtons Law of Gravitation. If it is near the surface of the Earth, most likely g (not G ) is appropriate. Strategies solving problems on the Exam Fall 2010 Oklahoma State University PHYS2014: Benton Lecture 17, Slide 4 2. Ask yourself, is this a translational (linear) motion problem, a rotational motion problem, or both? If translational, use translational quantities and equations. If rotational, use rotational quantities and equations. If both, youll may need to separate the problem into translational and rotational parts and then figure out how to convert one into the other (usually rotational into translational). Ask yourself, Is this a rotational motion problem in disguise? e.g. the Sliding Wineglasses problem. Fall 2010 Oklahoma State University PHYS2014: Benton Lecture 17, Slide 5 3. Ask yourself, How many dimensions are there in this problem, 1 or 2? (We havent done any 3-D problems.) If 1-D, vector quantities can be treated as scalars, but you must take direction into account, i.e. by + and - signs....
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PHYS_2014_Lecture_17 - Fall 2010 Oklahoma State University...

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