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Question

What is potential energy? Derive an equation for gravitational potential energy of a body of mass 'm' at a height 'h'.

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Solution

  • Potential energy is the energy possessed by the body by virtue of its position or configuration.
  • Consider a body of mass m at a height 'h' from the ground.
  • The amount of work done to raise this body to this height h against the force of gravity:
W=F×h where F is the force of gravity .
W=mgh

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