In which of the following cases it is certainly not possible for the diac to perform pure rolling.

In which of the following cases it is certainly not possible for the d

1.	In which of the following cases it is certainly not possible for the diac to perform pure rolling.
Answer» <html><body><p>A <a href="https://interviewquestions.tuteehub.com/tag/rough-614919" style="font-weight:bold;" target="_blank" title="Click to know more about ROUGH">ROUGH</a> inclined <a href="https://interviewquestions.tuteehub.com/tag/plane-1155510" style="font-weight:bold;" target="_blank" title="Click to know more about PLANE">PLANE</a><br/>Asmooth inclined plane<br/> A smooth horizontal surface<br/>A rough horizontal surface<br/></p>Solution :In case of smooth inclined plane, speed of the disc will change <a href="https://interviewquestions.tuteehub.com/tag/due-433472" style="font-weight:bold;" target="_blank" title="Click to know more about DUE">DUE</a> to component of weight along the surface but there is no force to apply torque about the <a href="https://interviewquestions.tuteehub.com/tag/centre-912170" style="font-weight:bold;" target="_blank" title="Click to know more about CENTRE">CENTRE</a> to change the angular speed accordingly. Hence it is not possible for the disc to <a href="https://interviewquestions.tuteehub.com/tag/perform-1150848" style="font-weight:bold;" target="_blank" title="Click to know more about PERFORM">PERFORM</a> pure rolling on an inclined plane. Option (b) is correct. In all other cases condition of pure rolling can be achieved.</body></html>