A force F= 2i +3j- 4kN acts on a particle which is constrained to move in the XOY plane along the line x = y. If the particle moves 5m, the work done by force in joule is
F = 2 i + 3 j - 4 k as x=y s=5 then s = 5 i + 5 j
work done = 2x5 + 3x 5 = 25 joule