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Question
Physics
A force ( vecF)=3 hati+c hatj+2 hatk acting on a particle causes a displacement: ( vecs)=-4 hati+2 hatj+3 hatk ' in its own direction. If the work done is 6 J, then the value of ' c '. is
Q. A force
(
F
)
=
3
i
^
+
c
j
^
+
2
k
^
acting on a particle causes a displacement:
(
s
)
=
−
4
i
^
+
2
j
^
+
3
k
^
' in its own direction. If the work done is
6
J
, then the value of '
c
'. is
2197
209
Work, Energy and Power
Report Error
A
0
11%
B
1
13%
C
6
61%
D
12
16%
Solution:
W
=
(
3
i
^
+
c
j
^
+
2
k
^
)
⋅
(
−
4
i
^
+
2
j
^
+
3
k
^
)
=
6
joule
W
=
−
12
+
2
c
+
6
=
6
⇒
c
=
6