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# Tag Archives: Classical mechanics

## JEE 2014 IS NEAR … How to do the last minute preparation?

The Engineering aspirants of India are now towards the last round of preparation JEE 2014. The paper pen phase of the 2014 edition of the JEE-Mains is scheduled for April 6 and the online examinations will be conducted on April 9, 11, 12 and 19.

The duration of the examination is three hours and will test the candidates on physics, chemistry and mathematics.

Here we will have a brief discussion on how to go for the last round of preparation in Physics. The visitors are welcomed for participating in the discussion through the comment system. Just post your questions and queries as comments to this post.

In Physics the most important topic is MECHANICS, which includes kinematics, laws of motion, work power energy, rotational motion. Electrostatics, Current electricity, magnetic effects of current, electromagnetic induction and alternating current circuits along with the entire OPTICS are to be taken seriously. If you can make a complete thorough revision during the week ahead, you can certainly score very good marks in Physics.

After that if you get time, revise Bernoulli’s principle, Surface Tension, Elasticity with special attention to Young’s modulus.

These are the portions which need to be understood and applied rather than memorizing.

PLEASE MAKE IT A POINT TO SOLVE ALL THE EXERCISES FROM THE NCERT TEXT BOOK. (Including the additional exercises)

Do not neglect the chapter UNITS AND DIMENSIONS, THE ERROR ANALYSIS ETC.

Practice well, solve maximum number of problems and success will be yours. Have some doubts in Physics? Feel free to discuss them here. The questions can be posted here for discussion and hope to get a suitable answer.

## Speed of Light and Protons

If the definition of the speed of light is for massless particles, then how is a proton, having mass, accelerated to the speed of light?  This sounds like a conumdrum.

Posted Thierence

No massive particle has not so far crossed the speed of light. Even the extremely light particles – the neutrinos – couldnot cross the speed of light. Protons have not crossed the speed of light. When it nears the speed of light, the relativistic mechanics will become prominent and the it is to be treated is different from the classical mechanics.

## How to do questions of mechanics efficiently?

How to do questions of mechanics efficiently???????????????????????
although hcv done but unable to solve new problems ………….hcv done with the help of solutions..help me

Sarthak  posted

We cannot just state all the tactics in a go, as the individual problems differ from each other and the techniques and tactics required are different.

However, these are some suggestions which will help you to solve the problems in Mechanics (and Physics in general)

• Visualize the problem.  You should be able to imagine and visualize the situation given in the problem. Draw diagrams to illustrate. Write in all the necessary details along with
• Write the physical quantities given, assumed and to be found using accepted notations. This will help you to zero in on the correct formula
• … To be continued

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