Recent content by rtshah

  1. R

    When is the work on a spring negative and when is it positive?

    Direction of spring force is always against its extension . Since F = - kx if the this is opposite to instantaneous displacement of body then negative work is done or if it is along the displacement positive work is done
  2. R

    Action reaction pair of magnetic force

    I am not able to understand reaction of magnetic force and how it is equal to qvb ?
    • rtshah
    • Thread
    • Action reaction Force Magnetic Magnetic force Pair Reaction
    • Replies: 3
    • Forum: Electromagnetism
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