Physics 123-124, Summer 2015

Textbook

University Physics, Young and Freedman, Volume 1, 13 ed., (ISBN 978-0-321-73338-2) and the Student Solutions Manual (ISBN 978-0-321-69668-7). I will not use Mastering Physics so a used copy is OK. If you are planning on taking Physics 227-228, it might be economical for you to buy University Physics, Extended Edition, with Mastering Physics. Volume 1 contains Chapters 1-20, Volume 2 is Chapters 21-37, Volume 3 is Chapters 37-44, the extended edition is Chapters 1-44. "Mastering Physics" is the publisher's web-based resource. It is not used in this summer course but all the other instructors do use it.

Prerequisites

Calculus is a pre- or co- requisite. Derivatives and integrals of functions that we use will be relatively simple and not used until we get to Periodic Motion. Some calculus will be used in select, interesting, cases before Periodic Motion but you won't be responsible for those. Needless to say, the prerequites to calculus (algebra, trigonometry, basic geometry) must be mastered.

It would be very helpful to have had a good high school physics course. This course will be very fast and hard if it's your first one.

Vector algebra will be covered in class as needed, however, it would be helpful for you to review beforehand. Given the magnitude and direction of a vector, you should be able to give its components - and vice-versa. You should be able to add vectors and take the scalar and vector products of two vectors.

Over the summer, we will cover Chapters 1 through 20. This dictates a pace of one chapter per class meeting. In no other course will new ideas come faster. Be prepared to commit the time this course will require. If you are not very well-prepared, this course alone will be almost a full load.

Syllabus

List of Topics 123

We will start with algebraic and graphical descriptions of a particle in motion in one dimension. We will find the position and velocity as a function of time given the acceleration, covering in detail the special case of constant acceleration. Then we will generalize to motion in two dimensions discussing topics such as projectile motion and circular motion.

Newton's Laws will be introduced and the discussion of systems of forces on an object will create new opportunities for motion problems such as: an object moving on an inclined plane, Attwood's machine, objects suspended by cables, pulley machines, friction, etc. The forces involved in circular motion will be discussed and after energy and linear momentum are covered, circular motion will be covered in full.

The law of conservation of energy will be introduced. Knowledge of the energy of an object due to its velocity (kinetic energy) and position (potential energy), and the change in energy caused by external forces (work) will give you new techniques for solving for the motion of an object. The motion of falling bodies will be revisited and the important case of the motion of a mass on a spring will be covered in detail.

Another conserved quantity in an isolated system is momentum. Application of the law of conservation of momentum will be useful in many situations. Collisions and other situations involving multiple particles can be solved without knowing about the forces.

Finally, rotational motion will be studied. The ideas of rotational kinematics, moment of inertia, torque and angular acceleration, angular momentum and rotational energy will be used to solve problems involving rotating bodies. Combined linear and rotational motion will also be encountered.

List of topics 124

The motion of extended bodies (objects larger than points) with applied forces and torques will be studied. The special case of objects in equilibrium, ie zero acceleration, will be considered to solve many common problems.

The force of gravity will be studied including: the motion of objects in an inverse r-squared force field, gravitational potential energy, satellite and planetary motion.

Basic fluid mechanics, bouyant force, Bernoulli's equation will be covered.

Because of its importance, the harmonic oscillator will be studied in detail. The time dependence of position, velocity and acceleration in simple harmonic motion will be discussed in many applications. Wave motion will be discussed in general and also in specific media such as sound waves and waves on a string.

Approximately one third of the term will be dedicated to thermodynamics including: temperature, thermal properties, the ideal gas, heat and energy transfer, kinetic theory of gases, the Boltzman distribution, entropy and heat engines of various types.

Assignments

Your success in this course will be based on how well you can apply your knowledge and do problems. There will be many sources of problems and their solutions: examples in the book, examples in class, homework, quizzes and exams. The only way to do well at solving problems is to practice. For the most part, you will be assigned problems that have solutions worked out in the text materials.

  • Start working on your homework problems as soon as they're assigned, you need time to process, analyze, and understand how to get to the solution. If you can't do a problem, don't just read the solution - understand the failure in your knowledge or thought process, it's how you will learn to do problems for the exams. You should also read the problems at the end of the chapters to see what can be asked; try to classify the problems and ask yourself if you think you can do each type of problem.
  • Study the chapter (minus any sections specifically excluded) and pay particular attention to the examples worked in the text. They often illustrate important techniques that you use to solve problems. You should try to work the example problems on your own after studying them.
  • The standard model of classroom instruction is to come to class, take notes, and figure it all out later. This is the worst way to use the lecture system. You can use this method in the Fall and Spring terms where there's one lecture per week and one recitation per week. However, in this summer course there are 2 160-minute lectures per week and if you are not well-prepared for class we will all be wasting our time. Ideally, you will study each chapter and work on the HW problems before the class in which the subject is covered. Then the lecture will serve to fill in the gaps in your understanding. At the end of a class, you will be done with a topic rather than just beginning it. At least try this: study the Chapter before class for 30 minutes and see how much more you understand the lecture.

    Grades

    Your grade will be based on quizzes (70 points), midterm (70 points), and final exam (100 points). There will be a quiz every class except the first, the midterm day and the day of the final. The best 7 out of 9 quizzes will be counted.
    Makeups will not be given for quizzes. A makeup of an exam will be given only upon the request of the student's Dean.

    Class Schedule and Homework Assignments for 2015.


    THE FIRST LIST OF PROBLEMS IS FOR THE 13TH EDITION; THE SECOND LIST IS FOR THE 14TH.

    May 26: Read Chapter 1.1 to 1.6. Study Chapter 1.7 to 1.9. Study Chapter 2.1 to 2.5. Thoroughly study examples 2.7 and 2.8. Problems: [1.39, 2.23, 2.46, 2.64, 2.72, 2.94a.] OR [1.35, 2.23, 2.46, 2.60, 2.64, 2.82a.]
    May 28: Study Chapter 3.1 to 3.4, Read Chapter 9.1 and 9.3. Problems: [3.16, 3.21 (plus angle it hits ground), 3.25a, 3.29 (plus omega)] OR [3.16 (use 50m/sec), 3.21 (plus angle it hits the ground), 3.23a, 3.27 (use 7m/sec)(plus omega).]
    June 2: Study Chapter 4 and Chapter 5.1 - 5.3 or as far as we get. Problems: [4.5, 4.19, 5.27, 5.29a,b.] OR [4.1, 4.19, 5.27 (use 11.2 kg), 5.29 a,b.]
    June 4: Study the rest of Chapter 5. Problems: [5.9, 5.37, 5.53, 5.97, 5.114, 5.115] OR [5.9 (use 11 degrees), 5.39, 5.57, 5.95, 5.106, 5.105.]
    June 9: Study Chapter 1.10 on the scalar product, Chapter 6.1,6.2,6.4,7.1,7.3. Problems: [6.19, 6.23, 6.55, 7.5.] OR [6.21+6.22, 6.25 (use 8kg), 6.57, 7.5.]
    June 11: Study Chapter 6.3, 7.2, 7.4, 7.5. Problems: [6.37, 6.43, 6.81, 7.19, 7.72.] OR [6.39, 6.45, 6.75, 7.21, 7.64.]
    June 16: Midterm Exam
    June 18: Study Chapter 8.1 to 8.5, 10.1, vector product in polar description from Chapter 1.10. Problems: [8.7, 8.21, 8.44, 8.48, 8.51, 8.85a, 8.107, 10.3] OR [8.7, 8.21, 8.44, 8.48, 8.51, 8.81a, 8.93, 10.3]
    June 23: Study Chapter 9.1 to 9.5. Problems: [9.11, 9.20, 9.45, 9.83 without friction, 9.87] OR [9.11, 9.20, 9.41, 9.75 without friction, 9.77]
    June 25: Sutdy Chapter 10.1 to 10.6. Problems: [10.11, 10.31, 10.45, 10.63, 10.73] OR [10.11, 10.29, 10.45, 10.57, 10.65]
    June 30:
    July 2: Final Exam


    July 6:
    July 8:
    July 13:
    July 15:
    July 20:
    July 22:
    July 27: Midterm Exam
    July 29:
    Aug 3:
    Aug 5:
    Aug 10:
    Aug 12: Final Exam