EVERYDAY SCIENCE

Detailed explanation-1: -Elastic potential energy is energy stored as a result of applying a force to deform an elastic object. The energy is stored until the force is removed and the object springs back to its original shape, doing work in the process. The deformation could involve compressing, stretching or twisting the object.

Detailed explanation-2: -Elastic potential energy is energy stored in objects that can be stretched or compressed, such as trampolines, rubber bands and bungee cords. The more an object can stretch, the more elastic potential energy it has.

Detailed explanation-3: -Common mistakes and misconceptions. Although the spring force is a restoring force and has a negative sign, the elastic potential energy U s U s UsU, start subscript, s, end subscript cannot be negative. As soon as the spring is stretched or compressed, there is positive potential energy stored in the spring.

Detailed explanation-4: -When an object is stretched or compressed, the work done on the object is equal to the change in its elastic potential energy. This means that the amount of work done on an object is directly proportional to the change in its elastic potential energy.

Detailed explanation-5: -When we do work to compress or stretch a spring, we are actually storing elastic potential energy in that spring. The amount of energy increases with the square of the amount of the displacement. We can see that increase in the following images. Work is the area under a force vs displacement graph.