For the following statements, except gravity and contact force between the contact surfaces, no ....

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For the following statements, except gravity and contact force between the contact surfaces, no other force is acting on the body




Column-I


Column-II




I.


When a sphere is in pure-rolling on a fixed horizontal surface


(p)


Upward direction




II.


When a cylinder is in pure rolling on a fixed inclined plane in upward direction then friction force acts in


(q)


vcm > Rω




III.


When a cylinder is in pure rolling down a fixed incline plane, friction force acts is


(r)


vcm < Rω




IV.


When a sphere of radius R is rolling with slipping on a fixed horizontal surface, the relation between vcm and ω is


(s)


No frictional force acts




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