http://geophysics.sc.mahidol.ac.th/wsiripun/muic/icnspy132
ICNS/PY 132 :
Principles of Physics
Weerachai Siripunvaraporn
Department of Physics, Faculty of Science
Mahidol University
Email&FB : wsiripun2004@hotmail.com
Office hours: Before class at Alumni room.
(please call before: 08-7903-4146)
Course Objectives
 Students should have an understanding of
the fundamental principles of physics and
its applications with emphasis on the
mechanics and fluid mechanics.
 Students should be able to solve basic
problems using fundamental equations
developed in the areas listed above.
 Students should be able to apply
fundamental principles to study and solve
problems in new situations.
Here is another example of how
to use Physics to make
money...
At the same time, if you know
Physics, you won't lose any
money because this "trick" can
not fool you.. — in Frankfurt,
Germany.
What is in this class?
1.
2.
3.
4.
5.
What is Physics?
Math Review
Linear Motions (1-D and 2-D)
Force (Newton’s laws)
Circular + Rotational Motions
Work and Energy
7. Momentum and Impulse
8. Equilibrium of Rigid Body
9. Fluid Mechanics
Midterm
6.
Final
Text Books & References
 R. A. Serway and J. W. Jewett, Jr., Principles of Physics,
Thomson, 2002.
 R. A. Serway and J. W. Jewett, Physics for Scientists and
Engineers, International Edition, 9th Edition.
 (original slides are provided in
http://geophysics.sc.mahidol.ac.th/wsiripun/muic/icnspy132)
 H.D. Young and R.A. Freedman, University Physics with
Modern Physics: 10th edition, Addison Wesley, 2000.
(also available in Thai version)
 A. Beiser, Applied Physics, Schaum’s Theory and
Problems, McGraw Hill, 1994.
 A. Halpern, 3000 Solved Problems in Physics, Schaum’s
Solved Problems Series, McGraw Hill, 1988.
 Any introductory physics textbooks are useful for this course.
 There are also many introductory to physics websites freely
available on the internet. Use Google or Yahoo to search.
http://geophysics.sc.mahidol.ac.th/wsiripun/
muic/icnspy13
PPT Slides used in this class are created
from
 (1) Textbooks
 R. A. Serway and J. W. Jewett, Jr., Principles of Physics,
Thomson, 2002.
 R. A. Serway and J. W. Jewett, Physics for Scientists and
Engineers, International Edition, 9th Edition.

(2) The original slides from R. A. Serway and J. W. Jewett,
Physics for Scientists and Engineers, International
Edition, 9th Edition.


Chapter 1 to 15 are zipped and uploaded in the website
If I copied any slides from (2) to use in (1), this logo CH1
and a chapter number will be shown.
 (3) Copied from some websites (cannot remember; Ref? )
What is Physics?
Physics is Fun!
FUNdamental.
Physics is FUNdamental for all subjects.
It describes how the physical process works from the nanoscopic
scale to the size of the universe. Almost every subject is based on
the knowledge of physics, such as geology, chemistry, biology and
health sciences.
Understanding the concept in physics would make it easier to
understand many biological or geological processes and others.
In fact, physics itself is not as difficult
as you would think. Physics concept
is simple and easy to understand.
What is Physics?
The difficulty may not truly be from Physics itself, but from the
mathematics involved.
Physics and Mathematics are two subjects that always go together
and are hard to be separated from each other. However, you must
understand that mathematics is just a “tool” for physicists.
Physicists use mathematics to derive or prove the knowledge or
concepts of many natural phenomena. The final derivation is often
simple and easy to describe the nature “in words”.
E = mc2
Simple but not Simple!
Equation E = mc2, describes the relation between the energy (E) and
mass (m), where c is the speed of light.
Equation is very simple, but its derivation is not !. It relies on advance
mathematics, physical concepts and most importantly imagination!
Though the equation looks simple, its impact is not.
The bomb over Hiroshima Island is one of its examples.
E = mc2
Objectives of Physics
To find the limited number of fundamental
laws that govern natural phenomena
To use these laws to develop theories that can
predict the results of future experiments
Express the laws in the language of
mathematics

Mathematics provides the bridge between
theory and experiment.
CH1
Physics in everyday life
Examples of Physics Applications
Grading Scheme
Midterm
Final
Attendance
40%
40%
20%
Letter grades for ICNS/PY 132 for the past years
91%
83%
75%
67%
59%
51%
40%
0%
- 100%
- 90%
- 82%
- 74%
- 66%
- 58%
- 50%
- 39%
A
B+
B
C+
C
D+
D
F
What will be in the exams?
The exams will cover concepts and definitions, problems during
lecture or homework problems with minor numerical changes
(80%), and problems similar to those but requiring a deeper
understanding of concepts or more complex calculations (20%).
You will be provided with an equation sheet containing all equations
necessary to complete the exam. Any kinds of calculators are
allowed during the exam. No other kinds of material may be used to
assist you with the exam.
Purpose of Exams
To help you learn. The process of preparing for and taking the
exam enhances your appreciation of the subject.
To help me learn. An exam tells me how effectively I am at
teaching the subject.
To evaluate your performance. An exam provides some measure
of your mastery of the subject.
First page of the exam
How to succeed in this class?
Based on my experiences, teaching big classes has
never been easy for any teachers, especially when
students come from various backgrounds.
Some students may have strong background in physics and
math, while some students have little to “none”.
Emphasizing on “advanced” contents would make it difficult
for weaker students. On the other hands, making the
contents too simple would make it boring for advanced
students.
This fact makes it extremely difficult for teacher!
How to succeed in this class?
So, how can you help me
and help yourself?
This would requires a lot of afford and collaborations from everyone.
I recommend
• forming a group of 3-5 to study the subject together. A group should consist
of both good and weak students.
• studying together as early as possible (not 1 day before the exam).
• Weaker students spend more time alone studying in order to catch up with
the class.
• studying the subject in advance before the class! Would it be possible?
“I don’t teach you Physics, I use Physics to teach you the 21st century skills.”
Your benefits are not just the development of your 21st century skills, but also
the knowledge of science and life.
http://21stcenturyhawthorne.wikispaces.com/
Weera Siripun
"I'm a physics teacher. It's a job. I don't represent myself when i'm
grading. If I was representing myself. I'd let everyone pass. When I
give F or D or D+ to students, students will tell me a reason that they
don't deserve it. If I pass everyone with a reason, system wouldn't
work. I don't get any joy by giving F or low grades to students. And
I'm not upset if you don't like me because of that. It's not personal, it's
my job. I just do my job."
Edited after a speech of a traffic cop of "Humans of New York" blog
at www.humansofnewyork.com