a)Take two identical straws and suspend one of them freely. Rub the other straw with a piece of peper.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 is it?b)comb your dry hair.Bring the comb near small pieces of peper.what diyos observe?Explain.
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bcz of the rubbing positive electrons start moving near. so the attraction between them takes place. this force is known as friction force
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