CBSE Class 11-science Answered
please solve this.....
Asked by | 01 Aug, 2009, 04:29: PM
Expert Answer
Work done is the dot product of force vector and displacement vector.
W = work done, F = force = Fxi + Fyj + Fzk ; S = displacement = Sxi + Syj + Szk
W = F.S = FxSx + FySy + FzSz
Hence using component form of dot product,
work done = (5)(9) + (3)(4) = 57 J
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TopperLearning
Answered by | 01 Aug, 2009, 10:27: PM
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