Rationalised 2023-24
2 1  INTRODUCTION
In Chapters 6 and 8 (Class XI), the notion of potential energy was
introduced When an external force does work in taking a body from a
point to another against a force like spring force or gravitational force,
that work gets stored as potential energy of the body When the external
force is removed, the body moves, gaining kinetic energy and losing
an equal amount of potential energy