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Which one among the following happens when a swing rises to a certain height from its rest position ?

Options

  1. AIts potential energy decreases while kinetic energy increases
  2. BIts kinetic energy decreases while potential energy increases
  3. CBoth potential and kinetic energy decrease
  4. DBoth potential and kinetic energy increase

Correct answer

D. Both potential and kinetic energy increase

Step-by-step solution

As the swing rises, its kinetic energy changes to potential energy; as with height potential energy P.E. = mgh increases. And according to law of conservation of energy total energy E = K . E + P . E constant.

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