Friction
Friction
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There are two main types of friction:
There are two main types of friction:
Static friction and Kinetic friction
Static friction and Kinetic friction
Static friction operates between two surfaces that aren't moving relative to each other.
Static friction operates between two surfaces that aren't moving relative to each other.
Kinetic friction acts between objects in motion.
Kinetic friction acts between objects in motion.
Trains rely on friction between the metal rails and metal wheels in order to move.
Grease, water, and decomposing leaves can reduce the friction between the metal, making the train less efficient.
Trains rely on friction between the metal rails and metal wheels in order to move.
Grease, water, and decomposing leaves can reduce the friction between the metal, making the train less efficient.
Mammals and Friction
Mammals and Friction
Many land mammals have textured paws. The texture on the pads of coyotes, dogs, and wolves helps with friction while running without slipping.
Many land mammals have textured paws. The texture on the pads of coyotes, dogs, and wolves helps with friction while running without slipping.
Click to navigate to other forces
Click to navigate to other forces
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