Summary NEWTONS LAWS LIFT/ ELEVATOR PROBLEMS

Life problems
Actual mass
~



cable
-D to
get Fable it is 9 8
. X /lift +
everything
in lift)
/




A
Actual lift (the cables)
lift

moving
up .


lift lift is-moving
is-moving up up
Fg
9, 8 X actual
speeding slowing >
-




up up
- -

mass .




V
+ +
- up up
= - =




:
v
Frez =
ma : Frez =
ma

Fc + ( -



Fg) =
mc + a)
Fg + ( -

Fc) =
mc -
a)

1
apparent weight is heavier apparent weight is
lighter .




going down



life down
life
is-moving down
is-moving
speeding down
slowing down
-
-




- down
=
+
-

down =+

· Fret =
ma .. Fnez =
ma

Fg + C Fc) =
m(a) f + (
Fg) =
mc a)
-
-
-




W

feeling lighter feeling heavier

Fu
1 En FN =
9 8 x apparent
object lift
,

inside a M
weight
Moving
up .
Con scale (

lift lift is-moving
is-moving up up

I in life
>
-




speeding slowing things
-




up
-




up

- up
=
+ -



up
= + M
O : Frez =
ma : Frez =
ma


↑ &
F + C -



Fg) =
m( + a)
Fg + ( -

FN) =
mc -
a)

lighter Yg
↓
apparent weight is heavier apparent weight is .
Fg
=
9 ,
8 x actual mass .




FG




- going down



life down
life
is-moving down
is-moving
speeding down
slowing down
-
-




- down
=
+
-

down =+




I
· Fret =
ma .. Fnez =
ma

Fg + C Fr) =
m(+a) F + (
Fg) =
mc a)
-
-
-




feeling lighter feeling heavier


V
Fg