Sameer rolls his marble on three different surfaces spread out on floor – taut…
2019
Sameer rolls his marble on three different surfaces spread out on floor – taut cellophane sheet, carpet and newspaper. The force of friction acting on the marble in the increasing order is
Answer: C. Cellophane sheet, Newspaper, Carpet — Friction is least on the smooth cellophane sheet, greater on newspaper, and greatest on carpet. Increasing order is cellophane sheet, newspaper, carpet.
- A.
Newspaper, Cellophane sheet, Carpet
- B.
Newspaper, Carpet, Cellophane sheet
- C.
Cellophane sheet, Newspaper, Carpet
- D.
Cellophane sheet, Carpet, Newspaper
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Correct answer: C
Friction is least on the smooth cellophane sheet, greater on newspaper, and greatest on carpet. Increasing order is cellophane sheet, newspaper, carpet.
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