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What is the torque of a force 3hati+7hatj+4hatk about the origin, if the force acts on a particle whose position vector is |
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Answer» `hati - 5hatj + 8 hatk` Torque , `vectau = vecr xx vecF` `r = |{:(hati , hatj , hatk) , (2 , 2 , 1) , (3, 7 , 4):}| = hati(8-7) - hatj (8-3) + hatk (14 - 6) = hati - 5hatj + 8hatk` |
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