Home › Karnataka PUC I › Physics › Laws of Motion › A ring or sphere rolling without slipping touche…
A ring or sphere rolling without slipping touches the ground at just one point at a time. In principle it suffers:
AMore drag
BFixed drag
CNo friction
DHuge friction
Answer & Solution
Correct answer: C. No friction
1. The contact point has no motion relative to the surface.
2. With no relative sliding there is nothing for friction to oppose.
3. In principle it suffers no friction at all.
_Source: NCERT Class 11 Physics Part I, Chapter 5, Laws of Motion._
Related questions
A stone is whirled on a string. The inward force keeping it on its circle is the centripetExperiments show that the coefficient for a sliding object compares with the one for a staThe constant of proportionality linking maximum static friction to the normal force is theThe friction acting before an object begins to slide is distinguished from the friction acA crate is pushed but does not budge. The surface force that cancels the push is called:A book lies still on a table. Balancing its weight is an upward push from the table calledTwo railway wagons collide and couple together. The standard application of conservation oIn the third law, the words action and reaction are said to mean nothing else but: