phys1441-spring08-030308-post

phys1441-spring08-030308-post - PHYS 1441 Section 002...

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Monday, Mar. 3, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 1 PHYS 1441 – Section 002 Lecture #12 Monday, Mar. 3, 2008 Dr. Jae hoon Yu Types of Forces The Gravitational Force Newton’s Law of Universal Gravitation Weight The Normal Force Static and Kinetic Frictional Forces The Tension Force Equilibrium Applications of Newton’s Laws of Motion Today’s homework is homework #6, due 9pm, Monday, Mar. 10!!
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Monday, Mar. 3, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 2 Announcements • Term exam – Problem #18 was graded incorrectly – All will receive credit for this problem – Need all your exams back so that I can correct this and keep them • There will be a quiz this Wednesday – Covers CH4.1 up to where ever we finish today • Term exam #2 – Wednesday, March 26, in class – Will cover CH4.1 – whatever we finish Monday, Mar. 24
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Monday, Mar. 3, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 3 Types of Forces • Fundamental Forces: Truly unique forces that cannot be derived from any other forces – Total of three fundamental forces • Gravitational Force • Electro-Weak Force • Strong Nuclear Force • Non-fundamental forces: Forces that can be derived from fundamental forces –F r ic t ion – Tension in a rope – Normal or support forces
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Monday, Mar. 3, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 4 Newton’s Law of Universal Gravitation People have been very curious about the stars in the sky, making observations for a long time. The data people collected, however, have not been explained until Newton has discovered the law of gravitation.
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phys1441-spring08-030308-post - PHYS 1441 Section 002...

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