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Calculate the work done if a particle displaces through (2hati-hatj+5hatk) meter under a force (4hati+2hatj-hatk) newton. (work=vecF.vecs) |
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Answer» SOLUTION :`vecF.vecS=(4veci+2vecj-).(2veci-vecj+5veck)` `(4xx2)+(2xx-1)+(-1xx5)` 1 JOULE |
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