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Mathematics
Problem
A force of magnitude 6 acts along the vector
(
9
,
6
,
−
2
)
(9, 6, -2)
(
9
,
6
,
−
2
)
and passes through a point
A
(
4
,
−
1
,
−
7
)
A(4, -1, -7)
A
(
4
,
−
1
,
−
7
)
. Then moment of force about the point
O
(
1
,
−
3
,
2
)
O(1, -3, 2)
O
(
1
,
−
3
,
2
)
is a.
150
11
(
2
i
^
−
3
j
^
)
\frac{150}{11}(2\hat{i} - 3\hat{j})
11
150
(
2
i
^
−
3
j
^
)
b.
6
11
(
50
i
^
−
75
j
^
+
36
k
^
)
\frac{6}{11}(50\hat{i} - 75\hat{j} + 36\hat{k})
11
6
(
50
i
^
−
75
j
^
+
36
k
^
)
c.
150
(
2
i
^
−
3
j
^
)
150(2\hat{i} - 3\hat{j})
150
(
2
i
^
−
3
j
^
)
d.
6
(
50
i
^
−
75
j
^
+
36
k
^
)
6(50\hat{i} - 75\hat{j} + 36\hat{k})
6
(
50
i
^
−
75
j
^
+
36
k
^
)
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