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Work and Energy


  • Condition for scientifically work to be done
    • There must be a displacement
    • Displacement of an object must be in the direction of applied force


  • Work done by a constant force is defined as

          Work = Force × Displacement [along the direction of force]

              W = F × s [Unit – Joule, 1 J = 1 N-m]


  • Work done against gravity = Weight × Height = mg…

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