When a body falls, its potential energy gradually gets converted into kinetic energy. On reaching the ground, the whole of the potential energy of the body gets converted into kinetic…
(i) Potential energy due to position: Water stored in dam has potential energy. (ii) Potential energy due to shape: In a toy car, the wound spring possesses potential energy, and…
(i) The kinetic energy of air is used to run windmills. (ii) The kinetic energy of the running water is used to generate electricity.
The capacity of a body to do work is called energy possessed by the body. Itis a scalar quantity and is measured in joule (J). Generally, for practical purposes, a…
The work done on a body depends upon two factors: (i) Magnitude of the force (F), and (ii) The displacement through which the body moves (s).
(i) We apply a force to lift a book at a height and the book rises. (ii) When a bullock pulls a cart, it moves as work is done by…
When the student is picking up books from the floor in the beginning.
Potential energy (= mgh) does not change as it does not depend on velocity.
Heat energy is converted into electrical energy.