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Physics volume 1 for engineering l, Study notes of Physics

Mombasa Polytechnic Physics

The notes are all about engineering knowledge that help to build great engineer in the world by giving the techniques to solve the problems in the society. The notes are good for all engineering students

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APS 4101: PHYSICS I.2018

Course description

1. Mechanics: Units and dimensions

2. Statics: force and pressure,

3. Kinematics, dynamics.

4. Newton’s laws of motion.

5. Friction and circular motion.

6. Waves: general characteristics, types, superposition.

7. Heat: thermal expansion, transfer mechanics, thermometry.

Course Assessment

Continuous Assessment 30%, and End of Semester Examination - 70%.

Textbooks for the Course

1. Edwin, R. and Childers, R. (2001). Contemporary College physics. McGraw Hill. New York.

ISBN 10: 0072399112 / ISBN 13: 9780072399110

2. Halliday, D. and Resnick, R. (2004). Fundamentals of Physics. Wiley. ISBN: 0-471-32000-5

3. Berman, G., Forlan, L. and Tsifrinorvich, V. (2003). Modern physics and Technology for

undergraduates. World scientific publishing company. ISBN:9810248830

4. Irodov, I. (2008). Problems in General Physics. GK Publisher. ISBN: 9788123902517

5. Kleppner, D., Kolenkow, R. (2010). An Introduction to Mechanics. Cambridge University

Press. ISBN-10: 0521198216

6. Edwin, R. and Childers, R. (2001). Contemporary College Physics. McGraw-Hill.

ISBN

02015

42668

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APS 4101: PHYSICS I.

Course description

Mechanics: Units and dimensions
Statics: force and pressure,
Kinematics, dynamics.
Newton’s laws of motion.
Friction and circular motion.
Waves: general characteristics, types, superposition.
Heat: thermal expansion, transfer mechanics, thermometry.

Course Assessment Continuous Assessment 30%, and End of Semester Examination - 70%. Textbooks for the Course

Edwin, R. and Childers, R. (2001). Contemporary College physics. McGraw Hill. New York. ISBN 10: 0072399112 / ISBN 13: 9780072399110
Halliday, D. and Resnick, R. (2004). Fundamentals of Physics. Wiley. ISBN : 0-471-32000-
Berman, G., Forlan, L. and Tsifrinorvich, V. (2003). Modern physics and Technology for undergraduates. World scientific publishing company. ISBN:
Irodov, I. (2008). Problems in General Physics. GK Publisher. ISBN: 9788123902517
Kleppner, D., Kolenkow, R. (2010). An Introduction to Mechanics. Cambridge University Press. ISBN-10: 0521198216
Edwin, R. and Childers, R. (2001). Contemporary College Physics. McGraw-Hill. ISBN 02015 42668

PART I

1. MECHANICS: UNITS AND DIMENSIONS

1.1 UNITS

Common suffixes and prefixes

Definition: The meter is the length of the path traveled by light in a vacuum during a time interval of 1/299 792 458 of a second. This time interval was chosen so that the speed of light c is exactly c =299 792 458 m/s.

DIMENSIONS

Question.

State four basic quantities of measurement and their SI units.

DIMENSIONAL ANALYSIS

There are many phenomena in nature that can be explained by simple relationships between the observed phenomena.

Example: Period of a Pendulum

Example.

Show by using dimensions that the equation: v^2 = 2ax where V is the velocity, a is the acceleration

and x is the displacement is correct.

Hint: [v^2 ]=[L^2 T-2]; [a]=[LT-2];[x]=[L]

MOTION ALONG A STRAIGHT LINE.

1. POSITION AND DISPLACEMENT

To locate an object means to find its position relative to some reference point, often the origin (or zero point) of an axis such as the x axis in Fig. 2-1.The positive direction of the axis is in the direction of increasing numbers (coordinates), which is to the right in Fig. 2- 1.The opposite is the negative direction.

INSTANTANEOUS VELOCITY AND SPEED

ACCELERATION

REVIEW QUESTIONS.

State the conditions satisfied for a moving object to be considered as accelerating.
A particle travelling at 8ms-1^ comes to rest after 1/3 hours. Find its displacement before

coming to rest. Ans: 4.78 x 10^3 m.

FREE-FALL ACCELERATION

REVIEW QUESTION.

If velocity of a body changes by the same amount for each similar time interval, find its acceleration? Ans: acc=0 ms-.