Question

Q Explain Rolling Friction. Do we roll or slide the eraser to remove the pencil work from the page?​

Answer 1

Rolling friction occurs when a wheel, ball, or cylinder rolls freely over a surface, as in ball and roller bearings. The main source of friction in rolling appears to be dissipation of energy involved in deformation of the objects.

Yes, because they work by shedding rubber to discard the removed graphite. That shedding requires a mechanical rubbing action, and that will inevitably force some graphite deeper into the paper.

Answer 2

Answer:

When an object rolls over the surface of another object ,the resistance to its motion is called rolling friction. It is always easier to roll than to slide an object over another object .So rolling friction is much less than the sliding friction.

we slide the eraser to remove the pencil work from the page because we need more friction to remove the pencil marks.