Rotational Mechanics
 Hewitt's
CP Surf Unit I: Mechanics Unit 1:
Chapter
11 Learning Links
NOTE: OUTLINE BELOW IS EXPANDABLE. CLICK ON HEADINGS TO SEE
ADDiTIONAL INFORMATION
PhyzxSpeek
Torque is the product of the length
of the lever arm and the component of the force
perpendicular to the lever arm.
The distance
from the turning axis and the to the point where the force applied is
called the LEVER ARM.
Rotational Inertia is the resistance of an object to
changes in its rotational state of motion. The terms moment of
inertia or first moment are more commonly used to describe this
property of an object or system.
The number of
revolutions per unit time of a rotating or revolving object is know as the Rotational Velocity. This quantity is also referred to as Angular Velocity or Rotational Speed. The correct
terminology is Angular Velocity as this is a
VECTOR measure.
Angular momentum is
a property of an object or system that describes its resistance to changes in
its rotational speed. It is quantified by the product of the Rotational
Inertia and the Rotational Velocity.
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LAW OF
CONSERVATION OF ANGULAR MOMENTUM
If no unbalanced external Torque acts
on a rotating system, the
angular momentum of that
system is
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TORQUE
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ROTATIONAL INERTIA
(or moment of inertia)
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The
resistance of an object to changes in its rotational state of motion is
called rotational inertia.
The
greater the rotational inertia, the harder it is to change the rotational
speed of an object.
Different Axes
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Longitudinal
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Transverse
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Median
INTERACTIVE SIMS
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ANGULAR MOMENTUM
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Angular momentum, the “inertia of rotation,”
is the product of rotational inertia and rotational velocity.
Angular momentum
is a property of an object or system that describes its resistance to
changes in its rotational speed. It is quantified by the product of the Rotational Inertia and the Rotational
Velocity.
Angular Momentum = = Rotational Inertia x Angular Velocity =
I x ω = mvr
more info...
'CONSERVATION
OF' LAW
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OTHER LINKS
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