What are the conditions in which force can not produce torque ?

1.	What are the conditions in which force can not produce torque ?
Answer» <html><body><p></p>Solution :The torque is zero with `vecr` and `vecF` are parallel or antiparallel. If parallel then `theta=<a href="https://interviewquestions.tuteehub.com/tag/0-251616" style="font-weight:bold;" target="_blank" title="Click to know more about 0">0</a>^(@)` and `<a href="https://interviewquestions.tuteehub.com/tag/sin-1208945" style="font-weight:bold;" target="_blank" title="Click to know more about SIN">SIN</a> 0^(@)=0`. If antiparallel, then `theta=180^(@)` and `sin 180^(@)=0`. Hence `tau=0` <br/> The torque is zero if the force <a href="https://interviewquestions.tuteehub.com/tag/acts-848461" style="font-weight:bold;" target="_blank" title="Click to know more about ACTS">ACTS</a> at the reference point. i.e. as `vecr=0, tau=0`.</body></html>

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