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16)A force F--K(yi + x J ) acts on a particle movingin the x-y plane. Starting from the origin, the particleis taken along the positive x-axis to point (a, 0) andthen parallel to the y-axis to the point (a, a). The totalwork done by the force F on the particle is(Here K = positive constant)(I) -2Каг(3) - Ka2(2) 2Ka2(4) Ka2

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