Question

2 Properties of friction ?

Answer 1

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Friction is essentially an electrostatic force between two surfaces. never initiates motion; it only responds to motion. depends on the types of materials that are in contact (µ - the coefficient of friction) depends on the net force normal pressing the two surfaces in contact (N)

The types of friction:-

Friction is defined as the force that opposes the motion of a solid object over another.

There are mainly four types of friction:

• static friction,
• sliding friction,
• rolling friction, and
• fluid friction.

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Answer 2

Answer:

1) it always acts opposite to the direction of motion.

2) always act parallel to the two planes in contact