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Dynamics

Dynamics. Instructor : S.A.A.Oloomi Email: Amir.Oloomi@yahoo.com Text: "Dynamics", Meriam and Kraige, 5th Edition, Wiley, 2001. The course will follow closely the material developed in the text, but sometimes from a different refrences. Mid Term: 8 Points Final Exam: 12 Points

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Dynamics

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  1. Dynamics Instructor:S.A.A.Oloomi Email: Amir.Oloomi@yahoo.com Text: "Dynamics", Meriam and Kraige, 5th Edition, Wiley, 2001. The course will follow closely the material developed in the text, but sometimes from a different refrences.

  2. Mid Term: 8 Points • Final Exam: 12 Points • Quiz & Homework: 2 Points • Sum: 22 Points

  3. Dynamics • Dynamics is broadly defined as the study of how materials change their properties with respect to time. The field of dynamics is one of the oldest and most fundamental in all of engineering. Different subfields of dynamics study the change in: • Position, velocity, acceleration of electrons, mass bodies in space • Material properties (mass, magnetization, density, temperature)

  4. Introduction to Dynamics Above is the well-recognized Newton’s 2nd law of motion. Note: This is an experimental law and is not “proven”, but merely reflects the most concise statement on the collection of physical experiments to date.

  5. Units/Dimensions of Force • Dimensions = (mass*length)/(time)2 • Units = Newtons SI units = lbf English units kg=kilogram lbf=pound of force m=meter ft=feet s=second lbm=pound of mass, or slug x g g=9.8 m/s2g=32.2 ft/s2

  6. Famous Law of Gravitational force Electrical Force:

  7. Gravity on Earth • For the special case of the force near the earth surface, the gravitational proportionality constant is simply: and the force equation reduces to: Note: This equation assumes that the distance between the center of earth and the object remains constant, and thus is valid only for small altitudes.

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