Find the moment of a force i+j-k passing through the point (0,1,1) about the point (1,0,-1)
Answers
Answered by
0
visit my channel Alex maths
Answered by
0
Answer:
r
=
B
−
A
=3
i
^
−
j
^
+2
k
^
F
=
i
^
+
k
^
+
j
^
moment of force M=
r
×
f
=(3
i
^
−
j
^
+2
k
^
)×(
i
^
+
k
^
+
j
^
)
m=
∣
∣
∣
∣
∣
∣
∣
∣
i
^
3
1
j
^
−1
1
k
^
2
1
∣
∣
∣
∣
∣
∣
∣
∣
=−3
i
^
−
j
^
+4
k
^
m=−3
i
^
−
j
^
+4
k
^
or
m=3
i
^
+
j
^
−4
k
Similar questions