Question

which force helps us to write on a paper or a black board??​

Answer 1

Answer:

Frictional force helps us in writing with a pen or pencil on a paper. The surface of paper, even though it looks smooth from the naked eye, is very irregular on the microscopic level. These irregularities cause the friction of the paper to get higher.

Answer 2

Answer:

Frictional force.

Explanation:

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