A force is applied at the point whose position vector with respect to the origin is

PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A force F⃗=4i^−3j^+5k^ N\vec F = 4\hat i -3\hat j + 5\hat k\,\text{N} is applied at the point P(2 m,−1 m,3 m)P(2\,\text{m},-1\,\text{m},3\,\text{m}) whose position vector with respect to the origin OO is r⃗=2i^−j^+3k^ m\vec r = 2\hat i - \hat j + 3\hat k\,\text{m}. (i) Write the expression for the moment of this force about the origin. (ii) Determine the torque vector and its magnitude. (iii) State the unit vector along the direction of this torque.

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