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Motion in a Circle:
Motion in a Circle:
Kinematics
Kinematics
z
Uniform
circular
motion
Í
Centripetal acceleration
z
Angular quantities
Í
Angular displacement
Í
Angular velocity
Í
Angular acceleration
Í
Relation between linear and angular
Í
Rolling without slipping
z
Non-uniform circular motion
Í
Radial and tangential components
Í
Constant angular acceleration
General Principles
General Principles

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Uniform Circular Motion
Uniform Circular Motion
New Topic
Question
:
A car drives around a circular track
at a constant speed (say 30 mph).
Is the
velocity
of the car constant?
The speed is constant, this is true.
However, the
velocity
, which involves both
magnitude
and
direction
,
is not
constant,
since the
direction
is continually changing.
Since velocity is not constant, the car is
accelerating
.