Question
In the following examples, state whether the force is a contact force or non contact force:
  1. a reluctant dog is being pulled by his master
  2. a boy playing football is kicking the ball away
  3. when iron nails are brought near a magnet, they are attracted to the poles of the magnet and stick to the magnet
  4. a coconut is falling from the coconut tree
  5. when a comb is rubbed against hair, small pieces of paper kept on a table get attracted to the comb
  6. when brakes are applied to a moving bicycle, it stops after some time

Answer

  1. contact force
  2. contact force
  3. non contact force
  4. non contact force
  5. non contact force
  6. contact force.

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