Recent content by hdp

  1. H

    Elastic collision with a massless box

    Using elastic equation I think the box and the block would stich together [Mentor Note -- Sideways, dark image fixed up]
  2. H

    British physics olympiad problem: A ball bearing bouncing off a steel cylinder

    I am struggling to find correct approximation for the problem. Is momentum conserved at the immediate impact of... (1) Can I ignore gravitational force and potential for the spring which is connected to ground and vertically upholding a mass . ( using equilibrium)
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    How Can Undergraduate Physics Enthusiasts Enhance Their Learning Experience?

    I am an enthusiastic physics student in undergraduate level.
  4. H

    How to assign signs to energy?

    The gravitational potential leads to velocity in downward direction, but spring potential does in upward direction. So should these energies have different signs (plus and minus or vice-versa)?
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