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A simple pendulum is set into vibrations. The bob of pendulum come to rest after some time due to

A) Air friction

B) Moment of inertia

C) Weight of bob

D) Combination of all above

1 Answer

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Best answer

A) Air friction

Explanations:

  • The arrangement consists of a light aluminium piston which is attached to the moving system.
  • When the piston moves inside the chamber, the air inside is compressed and pressure  of air ,thus builds up ,opposes the motion of piston and hence the whole moving system.

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