Sand paper or glass paper is a heavy paper with abrasive material attached to its surface which makes it very rough. Due to its roughness, it has many uses like making surfaces smoother, removing materials from the surfaces etc. What happens when you keep increasing the roughness of the sand paper’s surface?
a) Friction of the surface increases continuously
b) Friction of the surface decreases continuously.
c) Friction of the surface increases initially and then decreases.
d) Friction of the surface decreases initially and then increases
a) Friction of the surface increases continuously
b) Friction of the surface decreases continuously.
c) Friction of the surface increases initially and then decreases.
d) Friction of the surface decreases initially and then increases
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Answer:
Explanation: option (a) is correct because in smoother surface there is more friction
Answer:
The roughness of the sand paper’s surface which about "initial increase and later decrease".
Explanation: