Get 7 points by answering my question.
Explain why -:
a) a pencil will write on paper but not on glass .
b) climbing a greasy Pole is very difficult .
Ch Friction of class 8
please guys help me tomorrow is my exam .
I will Mark as brainliest if your answer will be right .
Answers
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A.
A pencil may not write on a glass because glass surface is very smooth and has no friction where as paper has friction and pencil's lead easily settles on it
B. Grease reduces friction between surfaces in contact. While climbing up the pole you use frictional force to hold yourself on the pole. Now, as the friction is reduced, you may not be able to hold yourself on the pole anymore. Hence, it is difficult to climb on a greasy pole.
HELP YOU
kamaliniseth:
a glass has less friction
Thank u
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