MATERIALS
:
mass
density
P
-
volume
=M
density does not
vary
with size or shape
.
sink whether it floats
density determines or
7
ave r a g e
.
HOOKE law
:
's
1 a Force F springs obey Hooke law
's
=KAL
s
stiffness a pair of opposite forces the extension is propartional
,
to the force applied
.
oK
spring constant
. law applies for compressive or tensile forces
Hooke's
Hooke
law also applies to other materials ( to point
's
a
uB
)
Hooke law stops force is
working when the
great enough
.
's
ELASTIC LIMIT L permemanthy stretcheds STRETCH
Ø
L j
Elastic plastic
:
:
deformation - stretcned
permanently
returns to its shape - do not return
Straighrliner
og
-
atoms
size to the
og position
t
atoms - pulled
apart - stretched PAST their
-
tension:
-
elastic limit -
not reached elastic limit
.
sconserve
Energy
Ewomer stretcning
]
- s
work done
stretching
:
mass
density
P
-
volume
=M
density does not
vary
with size or shape
.
sink whether it floats
density determines or
7
ave r a g e
.
HOOKE law
:
's
1 a Force F springs obey Hooke law
's
=KAL
s
stiffness a pair of opposite forces the extension is propartional
,
to the force applied
.
oK
spring constant
. law applies for compressive or tensile forces
Hooke's
Hooke
law also applies to other materials ( to point
's
a
uB
)
Hooke law stops force is
working when the
great enough
.
's
ELASTIC LIMIT L permemanthy stretcheds STRETCH
Ø
L j
Elastic plastic
:
:
deformation - stretcned
permanently
returns to its shape - do not return
Straighrliner
og
-
atoms
size to the
og position
t
atoms - pulled
apart - stretched PAST their
-
tension:
-
elastic limit -
not reached elastic limit
.
sconserve
Energy
Ewomer stretcning
]
- s
work done
stretching
