A force F = (5i→+3j→) newtons is applied over a particle which displaces it from its origin to the point r = (2i→-1j→) metres. The work done on the particle is
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A force F = (5i→+3j→) newtons is applied over a particle which displaces it from its origin to the point r = (2i→-1j→) metres. The work done on the particle is