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Question

Is friction a damping force?


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Solution

Explanation:

  1. Friction is defined as the force that opposes relative motion between two surfaces.
  2. The kinetic energy of the system is absorbed through sliding friction in coulomb damping, a type of continuous mechanical damping (friction resulting from the relative motion of two surfaces that press against each other). Machines often use coulomb damping as a damping mechanism.
  3. Through frictional energy absorption known as coulomb damping, kinetic energy is converted into thermal energy or heat.
  4. According to ‘Coulomb friction, it can be classified as either a stationary or a kinetic model.
  5. A pendulum decays in amplitude due to something called “damping”. Damping is where frictional forces acting on the pendulum gradually cause its amplitude to decay. These frictional forces could be anything from friction at the fulcrum of the pendulum to friction due to the viscosity of the fluid it is suspended in. Eventually, the pendulum will reach a point at which it stops moving due to this decay from damping.
  6. Friction always works to counteract the relative motion of objects, whatever the type.

Hence, friction is a damping force.


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