If F= 2i+j+3k, S=i-2j+3k find work
Answers
Answered by
1
Answer:
work done = F.S
2-2+9=9
hope it helps
Answered by
0
Explanation:
Work done is the dot product of Force and displacement.
W=
F
⋅
r
=
F
⋅(
r
2
−
r
1
)
⇒W=(
i
^
+2
j
^
+3
k
^
)⋅((
i
^
−
j
^
+2
k
^
)−(
i
^
+
j
^
+
k
^
))
⇒W=(
i
^
+2
j
^
+3
k
^
)⋅(−2
j
^
+
k
^
)
⇒W=−4+3=−1J
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