Physics Department
PHYS 1P21/91
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Introduction
Kinematics
Dynamics
Work+Energy
Rotational Motion
Momentum
Oscillations+Waves
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1P91_Sternin
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WorkEnergyMomentum
Introduction
Kinematics: motion in one and two dimensions
Dynamics
Work and energy
Work and energy
Ex
: three ways of putting a toolbox on a shelf
Ex
:
gravitational potential energy,
U=mgh
Ex
: origin of
U
is arbitrary:
a bobsled
Ex
: change in
U
does not depend on path:
a swimming hole
Ex
: friction is a
non
-conservative force;
W
total
>W
c.f.
Ex
: hammer and nail (work-energy theorem: K.E. =
ability
to do work)
Ex
: dropping things (conservation of total mechanical energy)
Ex
: role of friction/tension:
a skier
,
a swimming hole (revisited)
Ex
:
Do you believe in the conservation of energy?
power = rate of doing work
Rotational motion
Linear and angular momentum
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Updated: 30-Nov-2017 13:26