HC Verma’s Concepts of Physics - Chapter 10 - Question 15
Find the moment of inertia of a uniform square plate of mass m and edge a about one of its diagonals.
The question was posted by Ankit
Let the moment of inertia about the axis through the centre of the square plate perpendicular to the plane, assumed to be along Z axis, be I. Now the square plate will be in the XY plane. Let the X axis and Y axis be parallel to the edges and passing through the centre.
Then, we know that Ix = Iy = ma2/12
Then, according to perpendicular axis theorem,
Iz = Ix + Iy = 2Ix=2ma2/12=ma2/6
Now, imagine that X and Y axes are along the diagonals. (The diagonals of a square are also mutually perpendicular.)
Again, according to perpendicular axis theorem, Iz = Ix + Iy = 2Ix
The MI about the diagonal about its diagonal, Ix = Iz/2 = ma2/12
I want H C Verma solution of chapter 3 & 8. I cannot solve H C Verma problem because it is difficult for me. But i want to it. Please give some idea to solve H C Verma. My basic concept is not clear. (Komal Posted)
The solutions to HC Verma’s Concepts of Physics - all chapters are already available at this site. If you have any specific doubts, you can ask quoting the particular question in full.
“Referring to HC Verma Part 2, chapter 29, Electric field and potential, Q 69 I think that Force is inversely proportional to square of the distance between the charged particles, so acceleration is not constant and hence v*v = u*u + 2*a*s is not valid in this case. [...]
Categories: Ask Physics, concept, Electronics, Force, HC VERMA, Physics Links, Project, satyam, v 160 Tags: acceleration, charge, concepts of Physics, Electric, field, Force, h c verma, Incoming, particles, Physics, problem, relative velocity, satyam, search terms, solution, v 160, Verma
Surya Kant Dwivedi asks: “I am always confused in Physics that how can i do my best in Physics. It is my weakest portion in ’PCM’. Please guide me.”
Excelling in Physics in IIT JEE requires systematic planned preparation. The first step is to make sure that you can solve all the exercises from NCERT text book (including the solved examples and additional exercises) confidently and completely. This ensures that you have sufficient exposure and you are up to the standard expected of you.
The next step is to get a good collection of questions asked previously in IIT JEE and solve them. If you are not able to solve a problem, you are welcome to post it here.
Fundamentals of Physics (Resnick Hallidey)
Concepts of Physics (HC Verma)
Irodov Problem in Physics
Categories: Answers, ANSWERS TO QUESTIONS FROM VISITORS, HC VERMA, IIT JEE, Interesting Questions Tags: concepts of Physics, exercises, exposure, fundamentals of physics, guide, iit, jee, kant, Physics, resnick
Physics is an Exciting subject! But many students score less in Physics. Many look at Physics (and some Physics teachers) with fear. This is actually caused by the faulty methods of learning Physics.
Learn the Basics of Physics well
The Beauty of Physics lies in the fact that there are only a few basic principles to understand and remember; mainly the conservation principles. In learning Physics and excelling in Physics, one need more common sense than intelligence. Even without learning much by rot, those who have the fundamentals clear can arrive at better conclusions and can solve apparently hard nut problems with a systematic approach and application of the fundamental principles.
My request to all is to give more stress on learning things and trying to explain various phenomena and problems based on what you know. Learning to learn is the thing to do before you actually learn. Whenever you learn a new thing, try to connect with what is already known to you.
To make your knowledge and understanding stronger, try to explain what you have understood to your friends. Then their counter questions will help you think more deeply and analyze facts critically. Critical Thinking is very important. In Physics, Questioning Every Answer is more important than answering every question.
Whenever you learn new facts and formula, try to solve as many related problems as possible. This will help to develop your Higher Order Thinking Skills (HOTS).
Every Board, especially CBSE is giving much importance to HOTS.
Have a doubts? It’s natural. Doubts arise when you start thinking. It’s necessary to ask your doubts when they arise. If you are shy to ask, you can use our sister website www.askphysics.com. Every genuine question will be dealt seriously. (But not the simple HomeWork questions)
Some books recommended for Plus One and PlusTwo Students
This is a common question I mostly get. Please find below some question which I found useful.
- Fundamentals of Physics (Hallidey and Resnick)
- Conceptual Physics (Paul G Hewitt)
- Concepts of Physics (HC Verma)
- Irodov Problems in Physics
- Comprehensive Physics (Lekshmi Publications)
- Krishna’s Objective Physics (Shobhana Sharma)
- Principles of Physics (SL Arora)
- Objective Physics (Sanjeev Gupta)
- Pradeep’s Fundametal Physics
- Physics for You (Magazine from Mathematics Today Group – MTG Publications)
Wish you all the best in learning Physics.
Solutions to HC Verma’s Concepts of Physics
Solutions to HC Verma’s Concepts of Physics
Wikipedia says about HC Verma (Harish Chandra Verma)
“Prof. Verma obtained his doctoral degree from Indian Institute of Technology Kanpur in 1980, working under the supervision of G. N. Rao. He then worked as a lecturer and reader at Patna University before joining IIT Kanpur in 1994. Presently he is working on nanocrystalline magnetic materials and alloy systems. He is also interested in Earth Science problems such as meteorites and extinction boundaries.”
His book “Concepts of Physics” is a bible for almost engineering entrance exam preparation.
Categories: Plus Two Physics Tags: alloy systems, Concepts, concepts of Physics, earth science problems, entrance exam preparation, Harish, Indian, indian institute of technology kanpur, Physics, supervision
According to the principle of conservation of momentum, the total momentum of a system of particles remains constant provided no external force acts on it.
Principle of conservation of momentum is one of the fundamental concepts of Physics.