6 4
.
·
.
Work , Force , and
·
by Newton's second Law of Motion,
Force ,
F
=
where
ma
,
Work
Pressure
m = mass
a = acceleration
(Force) (Distance)
=
w = Fd
EX1
.
3
-
I
·
p=
A
or
density &
=>
p=
,
=
F = PA
.
V(column of Liquid)
=
Ad
=
5
-
(Density of
water :
+
=
1000kg/m2)