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Byju's Answer
Standard XII
Physics
Conservative and Non-Conservative Forces
A force 3î+...
Question
A force
(
3
^
i
+
4
^
j
)
N acts on a body and displaces it by
(
3
^
i
+
4
^
j
)
metre. The work done by the force:
A
5 J
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B
25 J
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C
10 J
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D
30 J
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Solution
The correct option is
B
25 J
W
=
→
F
.
→
s
Thus, work,
W
=
(
3
^
i
+
4
^
j
)
.
(
3
^
i
+
4
^
j
)
=
9
+
16
=
25
N
−
m
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0
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