Question

Why is it difficult to write on a glass surface

Answer 1

because there is no friction between pencils and glass and glass is harder than the lead in the pencil .and glass surface is smoother than the surface of paper

Answer 2

hey dear



Here is your answer

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It is difficult to write on a glass surface because


Due to friction glass is harder than pencil lead
and also glass is very smoother than paper


so when we write it's doesn't contact between the pen, pencil in glass due to their smoothness .

it's a static force also known as a part of friction

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hope it helps


thank you