Chapter Overview
This chapter introduces the fundamental concepts of work and energy, their interrelation, and their significance in real-life scenarios. It explores conditions necessary for work to be done, different forms of energy, the law of conservation of energy, and power. Practical applications of these concepts are also discussed.
Important Keywords
- Work: The product of force and displacement in the direction of force (W = F × d × cosθ).
- Energy: The capacity to do work.
- Kinetic Energy: Energy possessed by a body due to its motion (KE = ½mv²).
- Potential Energy: Energy possessed by a body due to its position (PE = mgh).
- Power: The rate at which work is done (P = W/t).
- Law of Conservation of Energy: Energy can neither be created nor destroyed; it only transforms from one form to another.
- Joule: The SI unit of work and energy.
- Watt: The SI unit of power.