A) 2
B) 4
C) 6
D) 8
Correct Answer: A
Solution :
Force is parallel to a line \[y=\frac{3}{2}\,\,x\,\,+\,\,c\] The equation of given line can be written as \[y=-\frac{k}{3}\,x\,\,+\,\,\frac{5}{3}\] Work done will be zero, when force is perpendicular to the displacement i.e., the above two lines are perpendicular or \[{{m}_{1}}{{m}_{2}}=-1\] or \[\left( \frac{3}{2} \right)\left( -\frac{k}{3} \right)\,\,=\,\,-1\] \[k=2\]You need to login to perform this action.
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