Bring the balloon all the way to the wall so that they are touching and release it. Is the balloon is able to stick to the wall? Do you think it is as strong an attraction as to the sweater? Explain why or why not.
Added by Courtney H.
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Make sure it is tied securely so that no air escapes. Show more…
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If you rub a balloon on your sweater and then press it to a wall, it will often stick there. Why does this happen? Rubbing the balloon surface gives it an attractive force. When the balloon is touched to the wall, the wall is attracted to it. Rubbing the balloon adds a negative charge to the balloon, and this charge on the balloon induces a positive charge on the wall. The attractive force between the balloon and the wall makes the balloon stick to the wall. Rubbing removes a surface layer of grease, allowing the rubber to come in sufficiently close contact with the wall so that air pressure holds it there. Rubbing the balloon causes moisture to condense on it, and surface tension causes the balloon to stick to the wall.
Madhur L.
what happened when you rubbed two balloons on the sweater? we’re the balloons attracted to the sweater? to each other? to the wall?
When a negatively charged balloon is placed against a wall, positive charges in the wall are attracted to the balloon. repelled from the balloon. too bound to the negative charges in the wall to have any effect. neutralized.
Adi S.
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