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A force F= -khati+xhatj where k is a pos...

A force `F= -khati+xhatj` where k is a positive constant, acts on a praricle moving in the xy plane. Starting from the origin, the particle is taken along the positive x - axis to the point (a,0) and then parallel to the y-axis to the point (a,a) the total work done by the formce on the particle is

A

`-2 ka^(2)`

B

`2 ka^(2)`

C

`-ka^(2)`

D

`ka^(2)`

Text Solution

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The correct Answer is:
C
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