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Answers. Best Answer: The two objects are neutral to start with because they have an equal number of protons (positively charged) and electrons (negatively charged). When they are rubbed together, some of the electrons from one object are transfered to the other. This means that one object will have more electrons than protons, and thus have a negative charge, while the other will have more protons than electrons, and therefore a positive charge. Source(s):
Friction is a type of contact forces that occurs between any two bodies in relative motion. Friction does not allow any relative motion between two bodies in contact.This happens because no body is perfectly smooth; so whenever two bodies come in contact with each other, it discourages any smooth motion between the uneven zig-zag surfaces.