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PHY 321
Introduction to Classical Mechanics
VIDEO LECTURES: 1-1 1-2 1-3 1-4 1-5
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HISTORY
Isaac Newton solved the premier scientic problem of his day, which was to explain
the motion of the planets. He published his theory in the famous book known
as Pr
Newtonian Dynamics
In the next few weeks, well study two chapters
study
from the textbook,
Thornton and Marion, Classical Dynamics
(5th ed.)
The chapters are
Chapter 2: Newtonian Dynamics for a Single
Particle
Chapter 9: Dynamics for a System of Particles
Classical Dynamics for a System of Particles
(Chapter 9)
Momentum and the Center of Mass
Toss a small pebble.
It will follow a parabolic
trajectory, as shown.
The momentum is, by definition, p = m v .
The x component is constant,
px = m v0 cos ;
the y co
Oscillations
4a. The Simple Harmonic Oscillator
In
In general, an oscillating system with sinusoidal time
an
dependence is called a harmonic oscillator. Many
physical systems have this time dependence:
mechanical oscillators, elastic systems, AC electric
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PHY 321
The Solar System
VIDEO LECTURES: 6-1 6-2 6-3
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KEPLERS LAWS OF PLANETARY MOTION
Keplers rst law is that the planets travel on ellipses with the sun at one focal
point. Newton deduced from this empirical observation that the gravitational force
o