8.60:
a)
s.
N
1.14
s)
10
(3.00
N)
380
(
3
⋅
-
=
×
-
=
=
-
t
F
J
x
x
s.
N
33
.
0
s)
10
(3.00
N)
(110
3
⋅
=
×
=
=
-
t
F
J
y
y
b)
(
29
(
29
(
29
s
m
05
.
0
)
s
m
80
.
9
(
N
560
.
0
N.s
14
.
1
s
m
20.0
2
1
2
=
-
+
=
+
=
m
J
v
v
x
x
x
s.
m
78
.
1
))
s
m
(9.80
N)
((0.560
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