Friction.

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Presentation transcript:

Friction

What factors affect friction?

What factors affect friction? Survey says: Surface texture Surface material Surface area Speed of slide Mass Weight Angle of surface Normal Force

Now, do some research! Read p 124,125 stopping at Two Types of Friction Watch demo

What is happening here?

What is happening here?

Do more research! Read p125-127 stopping at Properties of Friction

What must you do to get an object to start sliding?

What must you do to keep an object sliding at a constant velocity?

What is the Mathematical Relationship Between…