Notes of Chapter 04: Work and Energy of “Physics XI” for FSc Part 1 published by Punjab Textbook Board, Lahore. These notes are very helpful to prepare Physics paper of FSc Part 1 for Federal Board, Multan Board, Faisalabad Board, Sargodha Board, Gujranwala Board, DG Khan Board, Rawalpindi Board or any other board of Punjab, Pakistan.

The work done by a constant force is defined as The product of magnitude of displacement and the component of the force in the direction of the displacement.

• Work Done by a Constant Force
• Work Done by a variable Force
• Work Done by Gravitational
• Power
• Energy
• Work Energy Principle
• Absolute Potential Energy
• Escape Velocity
• Interconversion of Potential Energy and Kinetic Energy
• Conservation of Energy
• Non Conventional Energy Sources
• Energy from Tides
• Energy from Waves
• Solar Energy
• Energy from Biomass
• Energy from Waste Products
• Geothermal Energy