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Byju's Answer
Standard XII
Physics
Conservative and Non-Conservative Forces
If force F⃗...
Question
If force
(
→
F
)
=
4
^
i
+
5
^
j
and displacement
(
→
S
)
=
3
^
i
+
6
^
j
then the work done is
A
4
×
3
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B
5
×
6
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C
6
×
3
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D
4
×
6
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Solution
The correct option is
B
4
×
3
→
F
=
4
^
i
+
5
^
j
+
0
^
k
→
S
=
3
^
i
+
0
^
j
+
6
^
k
Work done
=
→
F
.
→
S
=
(
4
^
i
+
5
^
j
+
0
^
k
)
.
(
3
^
i
+
0
^
j
+
6
^
k
)
=
12
+
0
+
0
=
12
J
=
4
×
3
J
Suggest Corrections
0
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