Respuesta :
Answer:
as soon as they touch the sheet, it returns to its initial position due to the decrease in the load on the rubber ball.
Explanation:
When you rub a foam rod that is an insulator with felt it acquires some loads, when separated these two the barrel is loaded
When approaching the loaded rubber rod, suppose positively, to the aluminum ball that is a metal, the positive charge attracts the free electors of the aluminum until a balance of the electric force and the tension of the wire in which it is hung is established The aluminum foil therefore the aluminum foil approaches the rubber ball, due to the electrostatic attraction, the closer the aluminum wave deflects.
When the ball touches the sheet, the free charges of the metal pass to the insulator neutralizing the existing charges, whereby the electric field and the electric force decrease. Consequently the aluminum sheet descending and moving away from the rubber ball.
In summary, as soon as they touch the sheet, it returns to its initial position due to the decrease in the load on the rubber ball.
Due do the friction charged develop in the ball, the foil and ball attract.
When the ball and rod contact the charge neutralized and the attraction force decreased, which separate the ball and rod.
What is charge by friction?
When the insulating material are rubbed against each other, the electric charge generate between them.
The effect of friction charge between rod and ball leads to,
- In these two materials, the martial which gains the electron besoms negatively charged and the martial which losses the electron becomes positively charged.Now the foam rob rubbed with felt it losses the electron and becomes positively charged.
- Now when the aluminum foil ball is approached with the charged foam rob the attracted to the foil, as the positive charge attracts the aluminum foil.This happens due to negative charged electron of the aluminum foil which attracts towards the ball.
- As the rod touches the ball the charges passes thought the insulator and the charged over the ball neutralized due to this contact. Now the attraction between them is disappear and they ball start to move.
Hence due to the friction charged develop in the ball, the foil and ball attract.
When the ball and rod contact the charge neutralized and the attraction force decreased, which separate the ball and rod.
Learn more about the friction charge here;
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