Lagrangian Mechanics

Saturday, 1 December 2018

Calculus Questions and Solutions

Questions and solutions regarding differentiation, finding stationary values on the curve, limits, continuity of functions, and integrals.

Monday, 18 December 2017

How does your weight change in an elevator?

 Inside an elevator you feel heavier, lither, or normal depending on the motion of the elevator.  In fact what you feel as your weight is your apparent weight, that is not always the same as your actual weight (or simply your weight). In this article you will find the definition of apparent weight and actual weight. Then the motion of elevator and the change of your apparent weight inside it, will be discussed.

Wednesday, 13 September 2017

How to Find Equivalent Resistance of Resistor Cube?

 Resistor cube is made of 12 resistors connected to form a cube. Finding equivalent resistance between two nodes of the cube, is one of the most complicated problems in physics. But when resistors in the cube are identical, you can take benefits of its symmetry and find equivalent resistance between each pair of its vertices (or nodes).

Wednesday, 30 August 2017

Lagrangian Mechanics Course

This is an introductory course in Lagrangian mechanics provided for college students and anyone who is familiar with Newtonian mechanics and calculus.

In this course you will learn how to apply Lagrangian mechanics to the classical systems and find their equations of motion and their physical quantities. When applied to the classical systems, Lagrangian mechanics is equivalent to the Newtonian mechanics, but more easier than it, especially when you are dealing with more complicated systems.

This course is made of three sections:
In section one, you will learn how to use Euler-Lagrange  equations and find the equations of motion of classical systems.
In section two, you will learn how to find conservative forces and forces of constraint, by applying Lagrange equations of first kind to the classical systems.
In section three, you will find conservation laws of momentum and energy in Lagrangian Mechanics.

You can find this course here.



Tuesday, 20 January 2015

Physics 12: Classical Mechanics


Physics 12: Classical Mechanics


Physics- Mechanics course, created for students at upper high school and pre-university levels, available on Udemy platform, and Physics Classroom.

Course Description

This course contains video tutorials in classical mechanics at upper high school and pre-university levels. Each section of the course begins with video tutorials in concepts, rules and formalism of relevant topics; then you can take a quiz and watch problem and solution lectures. Each lecture has a supplementary material that is either the summary of the lecture with its important equations in pdf format, or it is the image of the lecture. This is a live course; I will improve the course by modifying the lectures and adding more lectures on it especially problem solving lectures. Changes will also be based on student's feedbacks. So if you subscribe to this course in addition to the lifetime access to the improving and growing number of lectures, you can also ask your questions, make comments on this course; and you can also send me any problem relevant to the course, after finding its solution I will add it to the problem and solution lectures.


Physic 12: Classical Mechanics

What are the requirements?

  • Mathematics in high school level including: Basics of vector analysis, differential and integral calculus.

What are you going to get from this course?

  • Over 57 lectures and 6 hours of content!
  • Free assignment and homework help. 
  • By the end of the course you will be able to solve problems in Classical Mechanics, and pass the Classical Mechanics final exam, and/or college entrance exam.

What is the target audience?

  • This Classical Mechanics course is created for upper high school students who are preparing for their final exams, and/or for the college entrance exams.
  • Every one with an interest in Physics, and Classical Mechanics can take this course.

In order to find more information about the course click on :
Physics-12: Classical Mechanics