chapt1 - ME3104 Dynamics and Control 1 Semester 1 2008/09...

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ME3104 Dynamics and Control 1 Semester 1, 2008/09 Dr J. Yuan Room FG634 Tel: 2766 7822 [email protected]
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Lecturer Notes Information This set of lecture notes are based on textbook, Vector Mechanics for Engineers, Dynamics by F.P. Bear, E.R. Johnston, and W.E. Clausen (McGraw-Hill) . Most materials are taken from the power-point presentations supplied by McGraw- Hill . These notes are prepared to aid the lectures using the captioned textbook without any other purposes . Students are urged to purchase the textbook to study this subject and solve homework problems.
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Text Book Recommendation Vector Mechanics for Engineers – Dynamics 8th Edition in SI Units by Beer, Johnston and Clausen McGraw - Hill, 2007
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Lecturer Information • Dr. J. Yuan • Office FG634 • Phone 27667822 • Email [email protected] • Office Hours: Mondays: 10:30-11:30AM, Thursdays: 10:30-11:30AM, Fridays: 2:30- 3:30PM . Other time slots (Appointment).
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Continuous Assessment Grading Homework 15% Assessment 0.5 x End of Subject Examination + 0.5 x Continuous Assessment Midterm test 30% Laboratory 5%
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1. Use 8.27 x 11.69 inches ( A4 size ) paper for homework. Homework should be neatly written on only one side of the paper 2. Present your work in a clear, logical and orderly manner. Being neat generally stimulates clear and orderly thinking, and vice versa. 3. In your homework solution : - draw any necessary diagrams; - list the relevant assumptions and equations used in the analysis; - show all work involved in getting the final answers, and clearly identify all units used in your calculation. - draw a box around your answers. 4. Staple all pages of the assignment together at the upper left corner. 5. Late homework will NOT be accepted. Guideline for Homework
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Introduction • Dynamics includes: - Kinematics : study of the geometry of motion. Kinematics is used to relate displacement, velocity, acceleration, and time without reference to the cause of motion. - Kinetics : study of the relations existing between the forces acting on a body, the mass of the body, and the motion of the body. Kinetics is used to predict the motion caused by given forces or to determine the forces required to produce a given motion. Rectilinear motion: position, velocity, and acceleration of a particle as it moves along a straight line. Curvilinear motion: position, velocity, and acceleration of a particle as it moves along a curved line in two or three dimensions.
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Rectilinear Motion: Position, Velocity & Acceleration • Particle moving along a straight line is said to be in rectilinear motion . Position coordinate of a particle is defined by positive or negative distance of particle from a fixed origin on the line. •T h e motion of a particle is known if the position coordinate for particle is known for every value of time t . Motion of the particle may be expressed in the form of a function, e.g., 3 2 6 t t x = or in the form of a graph x vs. t .
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Rectilinear Motion: Position, Velocity & Acceleration • Instantaneous velocity may be positive or negative. Magnitude of velocity is referred to as particle speed .
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chapt1 - ME3104 Dynamics and Control 1 Semester 1 2008/09...

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