Physics Department
PHYS 1P21/91
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Introduction
Kinematics
Dynamics
Work+Energy
Rotational Motion
Momentum
Oscillations+Waves
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1P21_Sternin
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OscillationsWaves
Introduction
Kinematics: motion in one and two dimensions
Dynamics
Work and energy
Rotational motion
Linear and angular momentum
Oscillations and waves
Simple harmonic oscillator (SHO)
ideal spring,
Hooke's Law
Ex:
stretching a spring
equations of motion:
displacement
,
velocity
,
acceleration
Ex:
a speaker diaphragm
Ex:
spring constant and frequency of oscillations
kinetic, potential energy;
conservation of energy
Mathematics of waves
transverse
and
longitudinal
waves
Ex
:
v
l
vs. v
t
,
scorpion and beetle
problem
energy and momentum transfer (dominoes analogy)
period, wavelength, velocity
the principle of linear superposition
constructive
and
destructive
interference of sound waves
adding waves, a standing wave
Sound waves
sound wave
,
pressure peaks and valleys
waves transport energy:
intensity of sound
Ex
:
an acoustic standing wave levitates objects
decibel scale for intensities
Ex
:
an amplified guitar
Doppler effect for a moving source
Ex
:
trumpet of a marching band
Doppler effect for a moving observer
Ex
:
riding away from a siren
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Updated: 30-Mar-2020 10:54