Free Course | 10 Lessons for Class 11 Physics | 17 Downloadable PDFs (Summary Notes + Quiz with Solution) |

What you will learn

Why Work Done is Equal to Change in Kinetic Energy?

Work Done by a Force Acting Obliquely to Displacement

Work Kinetic Energy Theorem

Work Done by the Force of Gravity

Work Done by a Variable Force

Work Done by a General Variable Force

Average Power and Instantaneous Power

Potential Energy of an Object and Work Done by a Force

Conservative Forces and Non-conservative Forces


Welcome to this physics course focused on Work, Power and Energy! This course, designed for students in Class 11, Class 12, and those undertaking AP Physics. Students preparing for competitive exams like IIT JEE or NEET would find it equally useful. The course delves into the intricate relationship between force, energy, and their impact on physical bodies. Over nine engaging videos, totaling one hour, you’ll embark on a journey to understand the fundamental principles and applications of work and energy, enhancing your physics knowledge and problem-solving skills.

This course is meticulously structured to build your conceptual framework, starting with the basics and advancing to more complex applications. Whether you’re preparing for exams or seeking to solidify your understanding of physics, this course offers a comprehensive exploration of how forces do work and the resulting energy transformations.

What You’ll Learn:

  • Introduction to Work and Energy:

    Introduction to Kinetic Energy and Work Done

    Velocity’s Impact on Kinetic Energy

    Work Done by Forces: Positive vs. Negative Work Explained

    Deriving Work Done by Force: Connecting Kinetic Energy and Displacement

    Work and Energy: The Equation That Relates Them

    Work as a Scalar Quantity: Force Direction and Displacement

    Calculating Total Work: Individual Forces vs. Resultant Force Approach

    Understanding Positive and Negative Work:

  • The Work-Kinetic Energy Theorem:

    Understanding Work-Kinetic Energy Theorem. How work translates into kinetic energy

    Analyzing Kinetic Energy Changes: Insights from Practical Examples

    Positive vs Negative Work: Dynamics of Directional Force

    Work-Energy Theorem in Multiple Forces

    The Work-Energy Theorem in Real Life: Understanding Everyday Physics

    Catching a Ball: Work-Energy Theorem in Action.

  • Work as dot product of force and displacement

    Understanding Work Done by a Force. Introduction to the fundamental equation of work (W = F * d)

    The Role of Angles in Work Done: Effects of an oblique force on work done

    Breaking Down Forces: Horizontal and Vertical Components in Work Calculation.

    Dot Product: The Mathematical Tool for Calculating Work at an Angle

    Positive, Zero, and Negative Work: Vector Components and their Effects on Kinetic Energy

  • Work Done by Gravitational and Spring Forces:

    The Physics of an Apple’s Ascent

    Why an apple thrown upward comes to a halt. Gravity and its decelerating effect.

    Initial Kinetic Energy and Gravity’s Work

    Understand how the force of gravity performs negative work, reducing kinetic energy to zero.

    Calculating Work Done by Gravity

    Downward Journey: Gravity’s Positive Work

    Work Done by Applied vs. Gravitational Force

    Energy transfer when lifting the apple with an upward force as opposed to throwing it upwards.

    Conserving Energy with Applied and Gravitational Forces

  • Variable Forces and Work

    Introduction to Work Done by a Variable Force

    Understanding Hooke’s Law – Dive into the formula F = -kx

    Negative Work by Spring Force – Why the spring force results in negative work on the mass.

    Calculating Work for Variable Forces – How to find work done by changing forces

    Integral Calculus in Work Calculation – Integral calculus as a powerful tool to sum up small quantities of work done

    Work Done by Spring Force: Positive vs Negative

  • Power in Physics:

    Understanding Power: Average vs. Instantaneous

    Work to Power Conversion

    Instantaneous Power Introduction

    SI Units of Power: Joules, Watts, and Kilowatt-Hours

    Force, Velocity, and Power Relationship

    Power in Motion: Practical Applications

  • Work = Negative of change in Potential energy

    Work Done by a Force and Potential Energy

    Kinetic to Potential Energy Conversion

    Understanding Gravitational Potential Energy (PE)

    Negative and Positive Work by Gravitational Force

    The Concept of Potential Energy: Potential to Do Work

  • Conservative Forces:

    Introduction to Conservative Forces in Physics: What Are They?

    Identifying Conservative Forces: The 4 Key Conditions

    Work and Energy Transfer: Gravity’s Role

    The Conservation of Energy with Conservative Forces

    Non-Conservative Forces and Energy Loss: Friction’s Effect

    Path Independence and Closed Loops: Zero Net Work with Conservative Forces

Course Highlights:

  • Interactive Learning: Engage with video lectures that simplify complex concepts, supported by real-world examples and numerical problems.
  • In-depth Analysis: Each topic is broken down to ensure a thorough understanding, using mathematical tools like differential and integral calculus where necessary.
  • Practical Applications: Apply the principles learned to solve practical physics problems, reinforcing your knowledge and skills.
  • Comprehensive Coverage: From the basics of work and energy to the intricacies of conservative forces and power, this course covers essential topics in depth.

By the end of this course, you will have a solid grasp of work and energy principles, equipped to tackle advanced physics challenges with confidence. Whether you’re aiming for academic excellence or a deeper appreciation of physics, this course is your gateway to mastering one of physics’ most fascinating topics. Join us on this educational journey and transform your understanding of work and energy in the world of physics.

What’s different about my courses:

When I create content for physics lessons, I think deeply around the areas where students struggle and feel confused. My lessons tackle these parts in depth. Also, I believe visual representation of various ideas makes a lot of impact. The lessons have visuals and animations that are thought through quite deeply

And most importantly, I make myself available personally to answer questions that a student who has enrolled may have

…and this is what my students wrote to me

@borasackesen                       I have a physics exam in two days and your videos are absolutely amazing! I understand all your

videos in one go and they are way more easier to learn than my lectures. Keep up the great work

please, and thank you

Csaba:                                        I learned new ideas of approaches. I’m looking to try them in my professional practice as a

teacher.Thanks! 🙂

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Bobbie Smith:                           Amazing explanations, I really learned a lot. Thank you.

Satyam Jha:                               amazing!! i could not understand vectors in my class but here it is very easy to understand Thanks a lot!!

Fernando  P. Radaza:              It help me a lot to understand better about Physics of Work, Power & Energy.

Chamara Dilshan:                    it’s good, explaining every small thing ,it’s good to start physics beginners

Onofrio :                                    The lessons given by the teacher are very interesting! Excellent course!

Simaran:                                    Very deep understanding of the subject

Shiva:                                         Very knowledgeable and sounds very nice and helpful

Gallina:                                      Excellent the lessons held by the teacher with exhaustive explanations and well illustrated. Well done course!

Smith:                                        Great course.The presentation is very clear. Thank you.

Pawan Kumar:                          The way to teaching us is amazing with all diagrams

Samit                                          This course has a lot of good content and very well presented. Thank you


It was concise and consequent. The exercises were good exposed and explained. Simply            excellent. I promise, that i will use some ideas in my every day practice in my classroom. I’m also teaching physics, but in Hungarian. I finished this course to improve my skills, first of all in interesting approaches, and foreign language skills as well. This course was exactly what I expected!



Work, Power and Energy – 10 Lessons for deep conceptual understating

Work and Energy: What really is work done by a Force?
When is Work done by Force Negative or Positive?
How Change in Kinetic Energy = Work Done (Work Kinetic Energy Theorem)
What is work done by Gravitational Force?
Spring Force: What is the work done by the Force F = -kx
What is the work done by a variable force
What is Power? How is it different from Instantaneous Power
Potential Energy of a particle. What is work done by Conservative Forces
How to find the potential energy of a particle
How to use of law of Conservation of Mechanical energy ? #10

Work, Power and Energy – Solved Numerical Examples

This is how you use Work Kinetic Energy Theorem
How to find Kinetic Energy of a moving mass
How to find Work if force & displacement are vectors
Finding work done on a rugby ball using Work KE Theorem
What is the work done on cyclist by the Force? #5
This is how you find Work done by multiple forces on a mass
What is work done by helicopter and gravity?
What is the work done by Force for displacement “h”
This is how to find work done in spring block system by a force
How to find Final velocity of a block tied to a spring
How to find Work done by variable force?
How to use Work Kinetic Energy Theorem in block pulley system
This is how you solve a mechanics problem using Work KE Theorem
How to find spring compression using Work Kinetic Energy Theorem #14
Given x = f(t), how to find work done