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5.116:
a) Differentiating twice,
βt
a
x
6

=
and
,
2
δ
a
y

=
so
N.
40
.
4
)
s
m
00
.
2
(
kg)
20
.
2
(
N/s)
58
.
1
(
s)
N
72
.
0
(
kg)
20
.
2
(
2

=

=
=

=

=
=
y
y
x
x
ma
F
t
t
ma
F
b)
c) At
N,
40
.
4
and
N
75
.
4
s,
00
.
3

=

=
=
y
x
F
F
t
so
N,
48
.
6
N)
40
.
4
(
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