1.

Draw a graph showing the variation of K.E and P.E with respect to displacement for a spring mass system.

Answer»

Solution :Let us consider the nature of a compressed or extended spring. A compressed or extended spring will transfer its STORED potential ENERGY into kinetic energy of the mass attached to the spring. The potential energy-displacement graph is shown in the figure. It SHOWS variation of potential energy with respect to displacement.
In a frictionless environment, the energy gets transferred from kinetic to potential and potential to kinetic repeatedly in such a way that the total energy of the system remains CONSTANT. At the MEAN position,
`DeltaKE=DeltaU`
i.e., change in kinetic energy = Change in potential energy.


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