EQUILIBRIUM We have seen that objects in Physics fall into two categories those that are in equilibrium and those that are not in equilibrium EQUILIBRIUM We have seen that objects in Physics fall into two categories those that are in equilibrium and those that are not in equilibrium ID: 727868
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Slide1
Can moving objects be in equilibrium?Slide2
EQUILIBRIUM
We have seen that objects in Physics fall into two categories: those that are
in equilibrium
, and those that are
not in equilibrium
.Slide3
EQUILIBRIUM
We have seen that objects in Physics fall into two categories: those that are in equilibrium, and those that are not in equilibrium
;
We have seen that objects will
remain in equilibrium
in the
absence of a
(Physics)
agent
;Slide4
EQUILIBRIUM
We have seen that objects in Physics fall into two categories: those that are in equilibrium, and those that are not in equilibrium
;
We have seen that objects will remain in equilibrium in the absence of a (Physics) agent
;
Objects will be
out of balance
during the time the
agent is acting on it
.Slide5
EQUILIBRIUM
In equilibrium
No outside agent
Motion is due to INERTIA
Out of equilibrium
Outside agent
Motion is due
to IMPULSESlide6
ONCE UPON A TIME…
…scientists believed that all objects in motion where being acted upon by an agent.
They called this agent “impetus”:
IMPETUS MOTION
IMPETUS MOTIONSlide7
GALILEO GALILEI
He presented a logic “thought experiment” to
prove that objects can move without an agent present
.
He concluded from his experiments that
objects moving at a constant velocity
(speed + a direction) are
also in equilibrium
.
MOTION @
CONSTANT UNIFORM
VELOCITY MOTIONSlide8
GALILEO GALILEI
MOTION @
CONSTANT UNIFORM
VELOCITY MOTION
AND
UNIFORM BALANCED
MOTION STATESlide9
The
Second Simplest
State
Identifier(s)
Object
in constant velocity.
Physics Concept(s)
DYNAMIC
EQUILIBRIUM
Slide10
The
Second Simplest
State
Identifier(s)
Object
in constant velocity.
Motion Type:
UNIFORM
Physics Concept(s)
DYNAMIC
EQUILIBRIUM
in MOTIONSlide11
The
Second Simplest
State
Identifier(s)
Object
in constant velocity.
Motion Type:
UNIFORM
2
types
Physics Concept(s)
DYNAMIC
EQUILIBRIUM
in MOTIONSlide12
The
Second Simplest
State
Identifier(s)
Object
in constant velocity.
Motion Type:
UNIFORM
2
types
Physics Concept(s)
DYNAMIC
EQUILIBRIUM
in MOTIONRotational (object rotates)Slide13
The
Second Simplest
State
Identifier(s)
Object
in constant velocity.
Motion Type:
UNIFORM
2
types
Physics Concept(s)
DYNAMIC
EQUILIBRIUM
in MOTIONRotational (object rotates)
Translational (motion on a line)Slide14
INERTIA
Ability for an object to sustain its state of equilibrium indefinitely.
For objects
in UNIFORM MOTION
,
the measure of the object’s inertia is the object’s
MOMENTUM.
PHYSICS CONCEPT MEASURE
“
MOVING”
INERTIA
MOMENTUMSlide15
MOMENTUM
2 types (ROTATIONAL and TRANSLATIONAL)
ROTATIONAL is called ANGULAR MOMENTUM
TRANSLATIONAL is called LINEAR MOMENTUMSlide16
LINEAR MOMENTUM
To find the amount of an object’s linear momentum, multiply its mass by its speed.
Momentum = mass
X speed