Science
Physics
Energy
Waves Vibrations and Oscillations

What is friction and how does it affect the swing of a pendulum?

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Wiki User
05/25/2010

Friction is just resistance to movement due to sliding surfaces or to air flow. For a pendulum it will be due to two things: one the resistance in its support bearing, the other to the air resistance of the pendulum itself. Thus energy is gradually lost and the pendulum will eventually come to rest unless it gets a little kick as required, this is supplied in an old clockwork mechanism by the spring which you wind up every week or whatever.