Master IIT JEE Mechanics With The D-W-M-Y Formula

 

JEE Main 2025 Session 1 and Session 2 have just concluded, and students are now eagerly looking forward to JEE Advanced 2025. For those preparing for JEE Main 2026, now is the perfect time to accelerate your preparation. Among all the topics in the vast JEE Physics syllabus, Mechanics holds significant importance — contributing approximately 23% of the total marks across both JEE Main and Advanced.

Mechanics covers key foundational topics such as:

Kinematics (motion in one and two dimensions)

Vectors

Newton’s Laws of Motion

Friction

Work, Power, and Energy

Circular Motion

Centre of Mass and Momentum

Rotational Motion

Gravitation

Fluid Mechanics

Simple Harmonic Motion (in part)

 

First, let us go through the Mechanics syllabus for JEE 2024-2025. 

 

Mechanics JEE Syllabus 2024–2025 

Mechanics JEE Syllabus 2024–2025

Physics and Measurement (Weightage ~5%) Physics, technology and society, SI Units, fundamental and derived units, least count Accuracy and precision of measuring instruments, Errors in measurement Dimensions of physical quantities, dimensional analysis and its applications.

Kinematics (Weightage 1.67%)

The frame of reference, motion in a straight line, Position- time graph, speed and velocity; Uniform and non-uniform motion, average speed and instantaneous velocity, uniformly accelerated motion, velocity-time, position-time graph, relations for uniformly accelerated motion

Scalars and Vectors, Vectors - Addition and subtraction, zero vector, scalar and vector products, Unit Vector, Resolution of a Vector

Relative Velocity, Motion in a plane

Projectile Motion

Uniform Circular Motion

Laws of Motion (Weightage 2.67%)

Force and inertia, Newton’s First law of motion, Momentum, Newton’s Second Law of motion, Impulses; Newton’s Third Law of motion

Law of conservation of linear momentum and its applications

Equilibrium of concurrent forces

Static and Kinetic friction, laws of friction, rolling friction

Dynamics of uniform circular motion, centripetal force and its applications

Work, Energy and Power (Weightage 3.67%)

Work done by a content force and a variable force

Kinetic and potential energies

Work-energy theorem

Power

The potential energy of spring

Conservation of mechanical energy, conservative and neoconservative forces

Elastic and inelastic collisions in one and two dimensions

Rotational Motion (Weightage 6.33%)

Centre of the mass of a two-particle system, Centre of the mass of a rigid body

Basic concepts of rotational motion; a moment of a force; torque, angular momentum, conservation of angular momentum and its applications; the moment of inertia, the radius of gyration

Values of moments of inertia for simple geometrical objects, parallel and perpendicular axes theorems and their applications

Rigid body rotation equations of rotational motion

Gravitation (Weightage 3.33%)

The universal law of gravitation

Acceleration due to gravity and its variation with altitude and depth

Kepler’s law of planetary motion

Gravitational potential energy; gravitational potential

Escape velocity, Orbital velocity of a satellite

Geostationary satellites

 

How to Prepare Mechanics for JEE? 

 

As you can see, the mechanics syllabus includes many different topics. So, if you are starting your preparations for JEE 2026 now, it is the perfect time to start with mechanics. Firstly, because mechanics is quite tough and the earlier you handle tough concepts, the better. Secondly, you can easily apply the trick that we are going to share with you - the D-W-M-Y formula!

 

What is the D-W-M-Y formula? 

 

This is a simple yet effective strategy that you can apply in Mechanics or any other topic of the JEE syllabus that seems tough to you. Before we share the details of the formula, here are some things that you must know:

#1 You cannot expect yourself to remember every concept that you are studying today even after a month. The human mind tends to forget something that it has not reviewed for a long time. So, revision is necessary to brush up on all the concepts.

#2 You cannot complete the whole syllabus in one day. You need to divide your JEE syllabus of Mechanics or any other topic into small chunks so that you can study every concept with full concentration.

#3 Do not rely only on text-based information. You need to visualise concepts to remember them for long. Taking notes, creating mind maps, using flashcards, etc., are some of the best techniques to remember tough concepts like Mechanics.

Now, the D-W-M-Y formula! It stands for the following:

D: Day

W: Week

M: Month

Y: Year

So, a concept that you learn today—you must revise it after D-W-M-Y, that is: a Day, a Week, a Month, a Year!

For example, if you studied the laws of motion on 12 July 2024, then you need to revise this topic as per the following:

Of course, you might revise a little earlier than a year. But, for the sake of simplicity, we are taking a year here. This formula will be suitable for Class 11 students who have started preparing for JEE 2026. But if you are in Class 12 and have only one year to prepare, you may revise the topics a little earlier after a year, say, after 6 months, 8 months, or 10 months.

• Next revision after a Day: 13 July 2024
• Next revision after a Week: 19 July 2024
• Next revision after a Month: 12 August 2024
• Next revision after a Year: 12 July 2025

 

Of course, you might revise a little earlier than a year. But, for the sake of simplicity, we are taking a year here. This formula will be suitable for Class 11 students who have started preparing for JEE 2026. But, if you are in Class 12 and have only one year to prepare, you may revise the topics a little earlier after a year, say, after 6 months, 8 months, or 10 months. 

 

The main idea behind this DWMY formula is to remind you that you need to revise a topic after some time in order to remember it. This formula also helps you in formulating a study strategy for JEE. You can decide your schedule in advance and keep your learning on track. 

 

How to revise Mechanics topics perfectly? 

Now that you know when to revise JEE Mechanics concepts, you must also know how to revise them. So, here are a few important tips. 

 

• Make notes: Your notes help you in revision. Imagine reading the text-heavy chapters from Physics books every time you study Mechanics. It will be stressful. You might have to convince yourself a lot to pick that book up. Notes are easy to read and comprehend. They are illustrative, they include short, crisp points that help you revise a topic quickly. Different kinds of notes that you can create for Mechanics are: 
  • Revision notes 
  • Study guides
  • Mind maps 
  • Flashcards
  • Tables/charts 
  • Formula sheets 
  • Diagrams/ illustrations 

 

• Practice questions: Since Mechanics would involve many numerical-based questions, it is better to practise them to revise how to apply the different formulas and concepts in different situations. You can use askIITians mechanics worksheets or daily practice papers for that. We have also created mock tests for JEE that will be useful for you. 

 

• Take a test: If you think you know the concepts, why not take a test? You can ask your teachers to test you or you and your friends can quiz each other. This will help you understand which topics are clear to you and need more practice. At askIITians, we schedule regular tests for students so that they can revise different JEE concepts from time to time. 

 

• Teach a friend: Here’s another great trick to ensure that you remember the Mechanics topics well. Teach your friends. You can decide to prepare a few topics each and then teach those topics to each other. This will strengthen your preparation and make learning much more fun! 

 

That’s all. These simple tricks will help you master the Mechanics for JEE Main and Advanced easily. If you need more help in understanding JEE Mechanics concepts, enrol in online coaching for JEE with us. We have the best teachers to guide you. Last, but not least, always be ready to learn. Do not consider learning or preparing for JEE a burden but a goal of your life! 

 

Frequently Asked Questions 

 

• Which topics are included in JEE Mechanics?

JEE Mechanics 2025 syllabus includes the following main topics: Physics and Measurement, Kinematics, Laws of Motion, Work, Energy and Power, Rotational Motion, and Gravitation.

Of course, you might revise a little earlier than a year. But, for the sake of simplicity, we are taking a year here. This formula will be suitable for Class 11 students who have started preparing for JEE 2026. But, if you are in Class 12 and have only one year to prepare, you may revise the topics a little earlier after a year, say, after 6 months, 8 months, or 10 months.

 

• How many mechanics questions have been asked in JEE until now? 

In the previous 10 years, around 80 questions from Mechanics have been asked in JEE papers. 

 

• I need help in studying for JEE, what should I do? 

You can enrol in the askIITians online coaching program for JEE and prepare under the guidance of our esteemed faculty. We provide personalised coaching for JEE Main and Advanced with comprehensive study materials, test series, live classes, doubt sessions, and a lot more! 

 

• Which is the most important chapter in JEE Mechanics? 

Rigid Body Dynamics also known as Rotational Motion is one of the most important chapters in JEE Mechanics.