Chapters in Mechanics

Rotational Dynamics

Introduction
Moment of Inertia
Radius of Gyration
Torque
Relation between torque and moment of inertia : Newton's Second law of rotation
Angular momentum
Relation between angular momentum and torque
Principle of conservation of angular momentum
Work done by torque
Work done by couple
Kinetic energy of rotating body and rolling body
Acceleration of rolling body down an inclined plane

Some important questions

Periodic Motion

Introduction
Simple harmonic motion
Equations in simple harmonic motion
Simple pendulum
Mass spring system
Energy in simple harmonic motion
Free and damped oscillation

Some important questions

Fluid Mechanics

Introduction
Pressure and some terms in fluid statics
Surface Tension
Surface Energy

Angle of Contact
Shape of liquid Meniscus: Laplace theory
Rise of liquid in Capillary Tube : Ascent Formula
Excess Pressure in liquid drop
Viscosity
Newtons formula for Viscous Force in a liquid
Types of flow
Reynolds Number
Poiseuille's Formula
Terminal Velocity
Stoke's law
The continuity equation
Bernoulli's equation and it's application

Some important questions

A quick tip (2)

One quick tip for learning mechanics in grade 12 is to practice solving problems regularly. Mechanics is a subject that requires a lot of practice to understand and master. Make sure to solve a variety of problems from different sources, such as textbooks, previous year papers, and online resources. This will not only help you understand the concepts better but also improve your problem-solving skills.

Mechanics involves a lot of physical phenomena, such as motion, forces, and energy. Try to visualize these concepts in real-life situations and think about how they would apply to different scenarios. You can also use diagrams, graphs, and animations to help you visualize the concepts and understand them better. This will make the subject more interesting and easier to understand.

Thank you !

Chapter-1 Rotational Dynamics

(See this complete notes of Rotational Dynamics.)

A quick tip (Rotational Dynamics)

It is easier to study the rotational dynamics comparing with analogous term in linear dynamics.
One important tip while studying rotational dynamics in Grade 12 NEB is to practice solving problems using both the rotational analogs of Newton's laws and the conservation laws of angular momentum and energy. It is also helpful to familiarize yourself with the concepts of torque, moment of inertia, and angular velocity. Additionally, drawing clear diagrams and labeling your variables can make problem-solving easier and more organized. Finally, make sure to practice regularly to solidify your understanding of the concepts and equations involved in rotational dynamics.

Thank you !

Chapter-2 Periodic Motion

(See this complete notes of Periodic Motion .)

(Source : LBC emis portal, DGC)

A quick tip (Periodic Motion)

When studying periodic motion in Grade 12 NEB, it is important to understand the fundamental concepts of amplitude, frequency, period, and phase angle. Practice solving problems using trigonometric functions, such as sine and cosine, and familiarize yourself with the relationships between these functions and the motion of simple harmonic oscillators. Additionally, be sure to understand the differences between simple harmonic motion and other types of periodic motion, such as damped and forced oscillations. It can also be helpful to visualize periodic motion using graphs and diagrams, and to relate the concepts to real-world examples. Finally, practice solving problems regularly to reinforce your understanding of the material.

Thank you !

Chapter-3 Fluid Mechanics

(See this complete notes of Fluid Mechanics.)

(Source : FB-page, Physics for +2 level )

A quick tip (Fluid Mechanics)

One quick tip for studying Fluid Mechanics in Grade 12 NEB syllabus would be to focus on the fundamental principles and equations governing fluid flow, such as Bernoulli's equation, the continuity equation, and the Navier-Stokes equations. Understanding these principles and equations is essential for solving problems in fluid mechanics.

It is also important to understand the different types of forces acting on fluids, such as pressure, buoyancy, and viscous forces, and their effects on fluid flow. Additionally, pay attention to the different properties of fluids, such as density, viscosity, and surface tension, and how they affect fluid behavior.

Finally, try to relate the concepts to real-world examples, such as the flow of water in pipes, the aerodynamics of airplanes, and the behavior of ocean currents, to help you better understand and remember the material.

Thank you !

About author

Samrat Manandhar

An electrical engineering student || Cosmic Enthusiast

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Welcome to our page dedicated to helping Grade 12 students prepare for their upcoming NEB Board Exam! As the creator of this page, I am committed to providing students with a comprehensive resource to make their exam preparation easier.

Our page includes important questions, comprehensive syllabus coverage, and model question papers to help students excel in their exams. It is also designed to be user-friendly and useful for students preparing for IOE and CEE entrance exams.

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Chapters in Mechanics

1. Rotational Dynamics

2. Periodic Motion

3. Fluid Mechanics

A quick tip (2)

Chapter-1 Rotational Dynamics

(See this complete notes of Rotational Dynamics.)

A quick tip (Rotational Dynamics)

Chapter-2 Periodic Motion

(See this complete notes of Periodic Motion .)

(Source : LBC emis portal, DGC)

A quick tip (Periodic Motion)

Chapter-3 Fluid Mechanics

(See this complete notes of Fluid Mechanics.)

(Source : FB-page, Physics for +2 level )

A quick tip (Fluid Mechanics)

Samrat Manandhar