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# Archive – 2015-16

## Physics 02, Gravitational and Spring Potential Energy,Work Energy Theorem

2016-06-13T14:06:13+00:00 Categories: Archive - 2015-16||

So there is one special thing called potential energy that we call conservative force. So write,
relation between conservative force and potential energy. Relation between conservative
force and potential energy. Okay, class, write now. Change in potential energy is equal to
minus work done by conservative force, okay. Now, from here we will create gravitational
force potential energy (1:36) […]

## Physics 04, Force Potential Energy Relation and P E Curve

2016-06-13T14:19:36+00:00 Categories: Archive - 2015-16||

Okay, find the maximum elongation. Block is released from rest, block is released from rest
and the spring is at its natural length. Spring is at its natural length. Class, let us discuss one
thing. It was released with zero initial velocity. When will there be maximum elongation?
When it will stop moving. You should understand that the […]

## Chemistry 02, Stoichiometry and Limiting Reagent

2016-06-13T14:19:25+00:00 Categories: Archive - 2015-16||

We will start, friends in the previous lecture we have discussed what are atoms, what are
molecules, how to calculate total number of atoms and how to calculate total number of
molecules. If one sample is given we can find out many entities are present in that sample
let it be molecules, or individual atoms or we can […]

## Chemistry 01 , Atoms and Molecules

2017-04-18T04:57:10+00:00 Categories: Archive - 2015-16||

Mole and Equivalent Concept:-
In the beginning we will be targeting only the mole concept. And we will try to understand
only the mole concept. We will not bring into the discussion of equivalent concept, this will
be only done when we have completed the portion of mole concept. But both are parts of
Stoichiometry calculation, so there is […]

## Physics, Kinetic Energy and Work

2016-06-13T14:24:00+00:00 Categories: Archive - 2015-16||

Work, power and energy.
Now there should be no disturbance and no one talking.
WPE, okay. Till now we were solving physics problem with force analysis. First we
studied Kinematics and then we studied Newton’s Law of Motion on frictions. What
we were doing, we used to draw free body diagram and then we use to see forces
and then […]

## Physics, News Law of Motion & Friction

2016-06-13T14:18:46+00:00 Categories: Archive - 2015-16||

Okay, tell me if you have any doubt about theory of friction, one is static and there is kinetic, that’s it
the end of theory. The value of static is zero, between fx maximum it can be anything, the value of
kinetic is fixed, uk into n. The value of fx is from zero to fx maximum […]

## Newtons Law of Motion & Friction – Pseudo forces

2017-04-18T04:57:10+00:00 Categories: Archive - 2015-16|Tags: , |

Pseudo Force.
Relax, settle down.
What is the meaning of Pseudo?
False.
Which is not real. Do you know the meaning of Law?
L-a-w.
Is there any other Law that you know of? There is only type of Law, according to me. What is the
meaning of Law?
Justice (Kanoon).
Justice which has a long arm.
It is blindfolded.
That is not necessary it depends on […]

## Physics 04, Problems based on Constrained Relations

2016-06-13T14:17:20+00:00 Categories: Archive - 2015-16||

Motion on inclined plane. Motion on inclined plane. What is inclined plane? See, the
triangular prism structure, this is called inclined plane. And if we see from this side, what we
can see is, this one, the cross section view of inclined plane sides, okay. This is the base, this
is the height and this particular angle, which […]

## Physics 03, Pulley Block Problems

2016-06-13T14:15:42+00:00 Categories: Archive - 2015-16||

Okay, we have the questions, I will tell you the answers. Have you reviewed the lectures?
Are you telling the truth? Kids, make a permanent habit of this, such small things are very
useful.
First part was, when the man is at rest means T must be equal to Mg. In fact, we will make
free body diagram. This […]

## Physics 02, Pulley Based Problems

2016-06-13T14:14:59+00:00 Categories: Archive - 2015-16||

Where, two blocks are connected with the help of two strings, okay. Now, we need to find
tension force in both the strings, okay, free body diagram. So, make a free body diagram of
5kg block. We have told you about WTN. There is 50 Newton weight, down, now see this,
this string pulls the 5kg block upwards, […]

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