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Class 11 · Chapter 5

Work Energy and Power

Work Energy and Power (NCERT Class 11, Chapter 5) explained by a physics teacher: work done by a force, work–energy theorem, potential energy of a spring, conservation of energy. Notes with free PDF, mind map, solved numericals with shortcuts, common mistakes and PYQs for CBSE, NEET and JEE.

Key topics
  • work done by a force
  • work–energy theorem
  • potential energy of a spring
  • conservation of energy
  • power
  • collisions
This chapter is being written. Here is what it will have. Meanwhile, open a chapter that is ready below.

  1. Understand

    Concept explainers and derivations: the idea, the steps, the formulas.

    Coming soon

  2. Notes and mind map

    Chapter notes with a free PDF, and a one-page mind map.

    Coming soon

  3. Practise

    Solved numericals with hints, methods and shortcuts.

    Coming soon

  4. Avoid mistakes

    The errors that cost marks every year, and the fix.

    Coming soon

  5. Exam focus

    Past-year questions and how to write full-mark answers.

    Coming soon

  6. Practical

    Experiments, readings, graphs and viva questions.

    Coming soon

  7. Test yourself

    A timed chapter test on the exam screen, with a report and solutions.

    Coming soon

All Class 11 chapters

  1. 01Units and MeasurementComing soon
  2. 02Motion in a Straight LineComing soon
  3. 03Motion in a PlaneComing soon
  4. 04Laws of MotionComing soon
  5. 05Work Energy and PowerComing soon
  6. 06System of Particles and Rotational MotionComing soon
  7. 07GravitationComing soon
  8. 08Mechanical Properties of SolidsComing soon
  9. 09Mechanical Properties of FluidsComing soon
  10. 10Thermal Properties of MatterComing soon
  11. 11ThermodynamicsComing soon
  12. 12Kinetic TheoryComing soon
  13. 13OscillationsComing soon
  14. 14WavesComing soon