Kepler’s Laws
Kepler’s First Law
Kepler’s Second Law
Kepler’s Third Law
Escape Velocity Revisited
Black Holes
Schwarzschild Radius
What if the Sun collapsed into a black hole?
Black Hole Detection Since no light can escape the event horizon, how can we even see the black hole? When matter falls towards the black hole it is compressed and heated, emitting radiation. This accretion disc is therefore visible evidence.
Chapter 13 Summary Gravitation
Chapter 14 Outline Periodic Motion Oscillations Amplitude, period, frequency Simple harmonic motion Displacement, velocity, and acceleration Energy in simple harmonic motion Pendulums Simple Physical Resonance
Periodic Motion Many types of motion repeat again and again. Plucked string on a guitar, a child in a swing, sound waves in a flute… This is called periodic motion, or oscillation. Stable equilibrium point Displacement from equilibrium leads to a force (or torque) to return it to equilibrium. Kinetic energy leads to overshoot, causing repeat
Periodic Motion Notation
Simple Harmonic Motion
Mass on a Spring
Simple Harmonic Motion of a Mass on a Spring
Displacement, Velocity and Acceleration
SHM Example