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# sg4 - PH 1110 Term A07 STUDY GUIDE 4 Equilibrium Angular...

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PH 1110 Term A07 STUDY GUIDE 4: Equilibrium, Angular Kinematics, and Dynamics Objectives 25. Define torque. Solve problems involving objects in static equilibrium. 26. Define angular displacement, angular velocity and angular acceleration. Given the graph or the functional form of one of the quantities versus time, determine the graphs of the other two. Describe in words and equations the motion from an analysis of one or more of the graphs. 27. Define moment of inertia, and solve problems involving rotational motion of rigid bodies subject to a net torque. 28. Calculate the angular momentum, relative to a specified axis, of a point mass traveling in a straight line. 29. Calculate the angular momentum of a rigid body whose angular velocity is specified. 30. Solve problems using the law of conservation of angular momentum. Suggested Study Procedure for Chapter 11. Study Sec. 10.1 first; then Study Secs. 11.1 through 11.3. Study Example 10.1, and then Examples 11.1 through 11.4. Answer Discussion Questions 2, 9, 11, 12 in Chapt. 11. Do Exercises 10.1, 10.3, and then Exercises 11.5, 11.13, 11.15, 11.19. Do Problems 49, 59, 65, 67, 73 in Chapt. 11. A. So far we've ignored ONE LITTLE DETAIL about motion: that objects can ROTATE as well as TRANSLATE. We'll TURN to that little detail in this last section of the course. Perhaps you will be happy to hear that we don't really need any new theory for this. We just need to recast all of the old familiar ideas into angular terms. That's one of the things we'll be illustrating and emphasizing a lot in lecture and conference meetings. B. We think that it is preferable to consider STATIC EQUILIBRIUM first before letting objects experience angular acceleration, so we're going to deviate just a bit from the order of topics in the text, first by studying Sec. 10.1 (for the definition of torque ), and then by skipping to Secs. 11.1 through 11.3 (for the application of torque to static equilibrium situations). Note that the Problem-Solving Strategy on p. 359 applies to ALL of the work covered in Sec. 11.3. About all that changes from one problem to the next is the geometry of the situation! This is what takes some practice. Suggested Study Procedure for Chapter 9. Study Secs. 9.1 through 9.4. Study the first nine Examples in Chapt. 9, Examples 1 through 9. Answer Discussion Questions 3, 4, 6, 7, 10. Do Exercises 1, 7, 9, 13, 19, 23, 25, 39, 47.

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