a force of 2i-j-k acts on a body and produces a displacement of 3i-2j-5k the work done by the force is
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W= F ⋅ S F =2 i^ +4 j^ + k^ S =3 i^ +2 j^ +5
W= F ⋅ S F =2 i^ +4 j^ + k^ S =3 i^ +2 j^ +5 k
W= F ⋅ S F =2 i^ +4 j^ + k^ S =3 i^ +2 j^ +5 k^
W= F ⋅ S F =2 i^ +4 j^ + k^ S =3 i^ +2 j^ +5 k^
W= F ⋅ S F =2 i^ +4 j^ + k^ S =3 i^ +2 j^ +5 k^ ⇒W=2×3+4×2+1×5=19 units
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