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Find the torque of a force vecF = 7hati ...

Find the torque of a force `vecF = 7hati +3hatj -5hatk` about the point whose position vector is `vecr = hati - hatj + hatk`.

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R G PUBLICATION-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-EXERCISE
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  18. What is the relation between linear momentum and angular momentum?

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