====== Chapter 04: Work and Energy ======
{{ :fsc-pctb-11:notes:fsc-pctb-11-notes-ch04.jpg?nolink&600|Chapter 04: Work and Energy}}
This is a forth chapter of the book Physics 11 published by Punjab Curriculum and Textbook Board, Lahore, Pakistan.

After studying this chapter the students will be able to:

 * Understand the concept of work in terms of the product of a force and displacement in the direction of the force.
  * Understand and derive the formula Work = wd = mgh 'or work done in a gravitational field near Earth's surface.
  * Understand that work can calculated from area under the force-displacement graph.
  * Relate power to work done.
  * Define power as the product of force and velocity.
  * Quote examples of power from everyday life.
  * Explain the two types of mechanical energy.
  * Understand the work-energy principle.
  * Derive an expression for absolute potential energy.
  * Define escape velocity.
  * Understand that in a resistive medium loss of potential energy of a body is equal to gain in kinetic energy of tho body plus work done by the body against friction.
  * Give examples of conservation of energies from everyday life.
  * Describe some non-conventional sources of energy.

<callout type="success" icon="fa fa-download">
|**Theory**: |{{ :fsc-pctb-11:notes:fsc-pctb-11-theory-ch04.pdf |Download PDF}} |
|**Question**: |{{ :fsc-pctb-11:notes:fsc-pctb-11-questions-ch04.pdf |Download PDF}} |
| **Numerical**: |{{ :fsc-pctb-11:notes:fsc-pctb-11-numericals-ch04.pdf |Download PDF}} |
</callout>

{{tag>FSc FSc_Part1 PCTB Notes}}