A marble is allowed to roll down an inclined plane from a fixed
height. At the foot of the inclined plane, it moves on a horizontal
surface (a) covered with silk cloth (b) covered with a layer of sand
and (c) covered with a glass sheet. On which surface will the
marble move the shortest distance. Give reason for your answer.


NCERT Class VIII
Science - Exemplar Problems

Chapter 12. Friction

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Answers

2015-06-14T18:20:20+05:30
On the surface which is covered with sand, the marble will move the shortest distance.Because the sand will offer the greatest friction with the marble among the surface which is covered with silk cloth and the surface which is covered with glass sheet.

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