Question

why bits of paper get attracted towards the scale when we rub it on our hair.explain

Answer 1

they get attracted to the scale due to static friction


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Answer 2

When a comb is passed through a dry hair the comb gets charged by friction.The molecules in the paper get polarised by the charged comb,resulting in a net force of attraction.

If the hair is wet,friction b/w hair and the comb reduces.The comb doesnot get charged and thus it will not attract small bits of paper.