a) take two identical straws and suspend one of them freely. Rub the other straw with a piece of paper. bring the rubbed end of the straw near the suspended one.
what do you observe from this activity?can you tell which type of force it is?
b) comb your dry hair. bring the comb near small pieces of paper. what do you observe? explain.
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Explanation:
a.When we do this activity we will observe that there is attraction between the two straws but not a strong one. This type of force is called electrostatic force. It is a non-contact force. It is formed due to induction of charge by friction or rubbing.
But after some time this effect dissappears.
b.The pieces of paper gets attracted to the comb but the attraction is not very strong one. This type of force is called electrostatic force. It is due to when we rub the comb to our dry hair due to friction the comb gets induced charge and hence the charged comb attracts the bits of paper. But after some time the ability of the comb gets lost.
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