What is torque? Explain the torque acting on a particle.

1.	What is torque? Explain the torque acting on a particle.
Answer» <html><body><p></p>Solution :Internal force of mutual interactions among the particles of a system are equal in <a href="https://interviewquestions.tuteehub.com/tag/magnitude-1083080" style="font-weight:bold;" target="_blank" title="Click to know more about MAGNITUDE">MAGNITUDE</a> and opposite in direction. Therefore the resultant <a href="https://interviewquestions.tuteehub.com/tag/torque-1422441" style="font-weight:bold;" target="_blank" title="Click to know more about TORQUE">TORQUE</a> due to them is zero. So we shall ignore the internal forces. <br/> Suppose `<a href="https://interviewquestions.tuteehub.com/tag/vec-723433" style="font-weight:bold;" target="_blank" title="Click to know more about VEC">VEC</a>(F_(1)),vec(F_(2)),vec(F_(3))....vec(F_(n))` are the external forces acting on the particles having position vectors `vec(r_(1)),vec(r_(2)),vec(r_(3))....vec(r_(n))`. <br/> The resultant torque acting on the system is the <a href="https://interviewquestions.tuteehub.com/tag/vector-20923" style="font-weight:bold;" target="_blank" title="Click to know more about VECTOR">VECTOR</a> sum of torque acting on the particles. <br/> `therefore` Resultant torue <br/> `vectau=vec(r_(1))xxvec(F_(1))+vec(r_(2))xxvec(F_(2))+......+vec(r_(n))xxvec(F_(n))` <br/> `therefore vectau=vectau_(1)+vectau_(2)+............+vectau_(n)`</body></html>

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