A force F=(î+3j-k) is applied on an object. If displacement of the object is d = (2î-j-k)m, then work done by the force on the object will be
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Explanation:
W = F.d
W = (i+3j-k).(2i-j-k) = 1x2+3x(-1)+(-1)x(-1)
= 2-3+1 = 0.
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