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(i) Find the torque of a force 7hati + 3...

(i) Find the torque of a force `7hati + 3hatj - 5hatk` about the origin. The force acts on a particle whose position vector is `hati - hatj + hatk`.
(ii) Show that moment of a couple does not depend on the point about which you take the moments.

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### Step-by-Step Solution #### Part (i): Finding the Torque 1. **Identify the Given Vectors**: - Force vector \( \mathbf{F} = 7\hat{i} + 3\hat{j} - 5\hat{k} \) - Position vector \( \mathbf{r} = \hat{i} - \hat{j} + \hat{k} \) ...
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