A force F=3i+4j newton acts on a body and produces a displacement of S=4i+KJ.The work done by the force is zero if the value of K is
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Answered by
13
Answer:
-3
Explanation:
w=dot product of f and s
0= ( 3i+ 4 j )(4i+ KJ)
0=3*4+4*k
0=12+4k
4k=-12
k=-3
Answered by
3
Answer:
option c( _3 )
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