Interactive Science


Interactive Science is really important for kids to explore and see things in action before they could start learning them for exams. Without interactive science and simulations, it's q quite demanding task to explain students and especially kids how to do all those things in their syllabus actually work in real life, how important are interactives, why and how they work, everything we are going to discuss at this website.
This interactive site deals with different kind of educational resources for students and teachers. It has a collection of science simulations that can help teachers to explain things to their students in a more comprehensive way. Interactive science also contains notes of different subjects for Azad Jammu and Kashmir students who study course of Mirpur Board AJK. 

A database of science simulations includes stuff related to "Physics", "Chemistry", "Maths" and "Biology".

Our mission is to explain things clearly to our students and get them caught up at the topics that have been a bug over the years now. It's because we've been cutting corners and love relying on theories just rather than concepts, that sounds quite odd.So let's just stop clowning around and make sure we've both feet on the ground by analyzing things and drawing mental road-maps in light of theories. Interactive science can really work wonder. Anyone who has had a tough time understanding concepts behinds the topics of mentioned subjects can take help from the blog. Interactives at different topics provide you simulations where you can perform things and see them working.

Thanks for visiting our blog and do let us know if you want anything that you want us to change. We'll always appreciate your contribution. At the same time, if you find anything interesting then make sure to share with other guys too via social networks.

See also

Free body diagram is a graphical way of depicting various forces acting on a body in a certain scenario. A free body diagram shows how much is the force acting on the body under consideration i.e. magnitude of forces acting on that object and also the direction of those forces.

Suppose you are trying to drag a desk through your classroom. Then how many forces acting on a body in a static state can be depicted easily by a free body diagram.

How to draw free body diagram

To draw free body diagram, as the name reveals, we do not need to figure a whole body under the action of forces. We can just draw a square or a box in place of the body and then draw arrows from the center of the square keeping in view the direction and magnitude of forces acting on a body under consideration. The size of the arrows represents the magnitude of the forces where the direction of arrows represents the direction of forces acting on a body. Suppose you are asked to draw a free body diagram of the situation (dragging desk) described above, then all you need is to draw a square or a box and then draw vectors through from the center of the box outward depending on the number of forces acting on the body. We know that there are four forces acting on our body we are trying to drag; weight, normal force, applied force and friction force. All these forces can be depicted by free body diagram as shown below
Here I’m not going to discuss how these forces act on our body when we try to drag a body down the floor. There is no restriction over how many forces you need to draw in free body diagram, it all depends on the situation under discussion. For example, when you are standing on the ground, there are only two forces acting upon you; one is the force of gravity which tries to pull you down and the normal reaction forces which exactly equals to your weight due to gravity (that’s why you are stable on the ground). In this situation, only two forces need to be shown in our free body diagram.
Now imagine a situation when a body accelerates rightward under the action of applied force. In this scenario, the frictional force can no more balance the applied force. And we can draw the free body diagram as given below
It can easily be understood from the free body diagram that the body under consideration is accelerating rightward while the weight of the body has been canceled by the normal force. The purpose of describing the physics behind the figure is to show the size of arrows, rightward and leftward arrows are not equal in size.

Similarly, we can come across a situation where any body gets under the action of one force only. A book is free falling from your hand and accelerating towards the ground is under the action of one force only and its free diagram is
In this way, you can draw free body diagram of any body under consideration.The most important thing is to disclose all the forces acting on a body on free body diagram and for that purpose, it is essential to have knowledge of different types of forces.
Interactive Science
What is a force? If you’ve placed a pencil at a table, do you think it will ever move on its own? For a moment, if we ignore surface friction, air pressure and gravity and then we set the pencil in motion; do you think it will ever come to rest on its own? Well, answer to both the question is NO. In the previous one, the pencil can move, accelerate rather I’d say, only when some unbalanced force is applied to it. And in the second example, the pencil will not come to rest ever provided that applied by some unbalanced force. This is what we’ve learned from Newton’s First Law of Motion. Therefore force can be defined as:

Force is an agent which tends to produce a change in the state of rest or of uniform motion of an object. It creates an acceleration in a body. We can also say it is a push or a pull of one object on another when both objects interact with each other. When two objects interact, then a force acts upon each of the objects and when there is no interaction, objects do not feel any kind of interaction, Interaction is the vital thing for the existence of forces.

One thing you must always make sure that force doesn’t produce motion, it creates acceleration only.

Types of forces

There are two types of forces on a broad scale.
  • Contact Forces
  • Non-contact Forces (Action-at-a-distance forces)

Contact Forces:

Contact forces are those types of forces when two bodies interacting with each other physically come in contact with each other. They act through a point of contact between two interacting bodies and this contact could be momentarily in the shape of impulse or continue for some period of time. For example, if a boy kicks a football, then the boy is applying force on the football by coming in physical contact with the football. Examples of contact forces include applied forces, frictional forces, normal forces, air resistance forces and tensional forces.

Applied Forces

Applied force is a force that is applied by one object on another. If a boy is pulling a cart through the floor and he is applying a force on the cart to accelerate it and this force is applied force.

Frictional Force

The frictional force is a force that comes into play two bodies are sliding over one another and its purpose is to oppose the motion. This force is applied by the surface over which an object moves or try to move. Because every surface has some kind of roughness in the shape of bumps and ridges, therefore, when these microscopic peaks and valley come in contact with each other they try to hinder the motion of an object due to intermolecular attractive forces between molecules of different surfaces.

Normal Force

The normal force also called a support force, is a force which supports the weight of a body on a supporting surface. This force is always equal in magnitude and opposite in direction to the weight of an object. We are standing on the ground, our weight is acting downward, and an equal force acting upward to support our weight is the Normal force.

Tension Force

The tension force is a force that acts along a string or cable which it is being pulled by forces acting from its opposite ends. For example, if we attach a weight at one end of a string and hang it somewhere, then the force that acts along in the string in the direction opposite to the weight is tension force. If this force gets equal to weight then the body gets in equilibrium.

Air resistance

Air resistance is a force that opposes the motion of an object when it tries to move through the air. Although it is quite noticeable for objects traveling at a very high speed, yet its magnitude is negligible in everyday life

Non-contact Forces (Action-at-a-distance forces)

These are the type of forces between two interacting objects when they do not come in physical contact with each other. Non-contact forces include gravitational forces- which is a force of attraction between two bodies having mass, electric forces-force of attraction between the nucleus and revolving electrons in orbits, and magnetic forces which are attractive or repulsive forces between two magnets separated by some distance.

The Newton (unit of force)

Force is a measurable quantity and every measurable quantity has a unit. Force is measured using a standard metric unit called the Newton (N). And one Newton is defined as the amount of force required to produce an acceleration of one meter per second in a body of mass one kilogram. Mathematically it is stated as
1 Newton = 1 kg • m/s2

Dear Students

Regarding the problems our students of Mirpur Board AJK usually come across in term of solutions of "Physics" questions, their solutions and sound understanding, I've created this page where you can find solutions to all the questions of Physics of a new pattern of Mirpur Board AJk 2017 for free. Now you do not need to mess around searching notes from classmates and sparing your time finally end up with nothing. With just one click, you can have your desired chapters' notes without any cost.

All these notes have been prepared in an easy and vivid language so that every student could feel free understanding and using them for their best. The purpose of these notes is to promote education, as far as we can, in Azad Kashmir and let our students get caught up at science concepts rather than just cramming them and facing the music when it comes to "Engineering Tests" after Fsc.

See also

Chapter #
Chapters’ Names
Download Here
Physical Quantities & Measurement
Turning effect of forces
Work and Energy
Click here
Properties of Matter
Thermal Properties
Transfer of heat
Comming soon

Dear Students

Regarding the problems our students of Mirpur Board AJK usually come across in term of solutions of "Physics" questions, their solutions and sound understanding, I've created this page where you can find solutions of all the questions of Physics of new pattern of Mirpur Board AJk for free. Now you do not need to mess around searching notes from class mates and sparing your time finally end up with nothing. With just one click, you can have your desired chapters' notes without any cost.


All these notes have been prepared in an easy and vivid language so that every students could feel free understanding and using them for their best. The purpose of these notes is to promote education, as far as we can, in Azad Kashmir and let our students get caught up at science concepts rather than just craming them and facing the music when it comes to "Engineering Tests" after Fsc.

Chapters #
Chapters Names
Simple Harmonic Motion

Click here


 Click here

Geometrical Optics


Current Electricity


Inductor Electronics

Information & Communication Technology



It is imperative that developmental biologists learn of the possible social consequences of their work and of the possible molding of their discipline by social forces. For today's biology students may be given more physical and social power than any group of people before them.
– Scott Gilbert and Anne Fausto Sterling

Biology is front page news, so it is important that we teach students to make connections between what they learn in the classroom and what they see in everyday life. As biology instructors, one may choose to teach biology devoid of social context, believing that students can make these connections on their own. 

We've got some of the interactives for biology students.

1.Color Vision


3.pH Scale


Are you a student of physics and have been having hard time understanding and visualizing things related to physics? I know it happens as I remember from my early days at school where I was a quite confused about how do those things actually work.
If yes, then we're here to help you as much as we can by providing you simulations showing things inside out. All you need is just to sit back, read some theories from you syllabus books and rest of work shall be done by these simulations.

If you still feel this stuff not enough, do let us know, we'll come up with new simulations to get you caught up at what you learn and cramp daily.

Thanks for visiting us.

Charge and Field


Faraday's Law

Ohm's Law

Resistance in a Wire

Balloons and Static Electricity

Charges And Fields

Geometric Optics

Bending Light

Radiating Charge

Masses & Springs

Gravity And Orbits

As far as the laws of mathematics refer to reality, they are not certain, and as far as they are certain, they do not refer to realityAlbert Einstein




3.Balancing Act


This page covers the most basic kinds of concepts in chemistry which will help students to understand very basics of things to get going further.

1.Acid-Base Solutions

2.Atomic Interactions

3.Balancing Chemical Equations

4.Build an Atom


6.Isotopes and Atomic Mass

7.Wave on a String

8.States of Matter: Basics

To make an effective study plan, you need to work smarter, not harder. You just need right tools, right strategies at right time for the right tasks. And this fact should be adopted in daily life especially in the life of students who has rather been a part of competition or suffering to get through.

 When I say “work smarter’, what does it actually mean?

It means you need to really plan your approach, make your mindset about things you’re going to tackle, cook up some solid plan to get things done and then make them happen actually. In simple words, when you are having a hard time getting through some work, then first you need to find your weakness, then let yourself know whether or not you can get over it, if yes, then what procedure do you need to put in. Once you recognize yourself and succeed in creating a kind of pattern for your work, just stick to your plan and do not give in until you’re home. In contrary to it, if you come across a kind of task or duty that seems like a hard pill to swallow, then I recommend you to get back to the drawing board, analyze some old works related to your field to see what specific steps you could take. Though this procedure might not give perfection to your work, I mean any port in a storm.

As my topic is confined to students’ plan their studies and timetable and especially those who are a kind of chickened out of their exams, have no idea where and how to start final exams preparations. For those students, I recommend them to make use of old papers of last 5 years if not more than that because it has been seen that questions often remains the same with the possibility of around 60%. Now you might wonder what if things do not get repeated, do you? The answer is quite simple, it is better to have something rather than nothing, as you’d almost given up.

Steps for Smarter Work in final exams

Collect Old Papers
Collect old papers of the relevant subject. You can do it online or offline depending on your region and let me tell you don’t forget to give importance to old papers of regions that are close to yours because exam board usually keep interchanging questions.

Analyze and ignore low-priority items
Once you’ve collected them, just sit tight and analyze them. Start creating your study plan by elimination method. Make a list of important chapters or to be more precise, a list of topics.

Work around your Study Plan
You’ll surely see a clear pattern of questions that give you an idea of important and least important chapters. For example, in mathematics papers of grade 9th and 10th, first two long questions always come from first four chapters. Now let me tell you what you need to do to move on.

As you see that pattern giving you a message that you need to spend more time on just first four chapters. If you’ve done them well, there is no way you can fail in the exam as every question, having 2 parts, contains 8 marks. That’s an essential method to prepare for your finals if you’ve not been good right through the year. In our pattern of papers, you’re supposed to do 3 long question where the third one belongs to theorems in the case of mathematics. Here you can prepare just one chapter of theorems as old papers also help you create a study plan for them too, I’m damn sure about it and this is the best way to study for a test and get ready for finals.

Now apart from long questions, there are three sections of short ones. And every chapter of mathematics contributes usually 2, at times 3, questions in a paper. If you cannot figure out conceptual ones, then you don’t need to worry yet, every section contains three to four definitions that you obviously learn by heart, I’m sure you would love to.

Make Study Timetable
 Now when you’ve everything in your hand, just create a kind of habit in the form of study plan and force yourself to commit the action on your plan every day. I call it the habit because if you keep working on your study timetable for around 30 days, it becomes a habit. To create a study plan, you can take help from various websites online as there are tons of data over it.

Above, I restricted myself to Mathematics study plan only, it’s just an example and you can try this method for other subjects too. My purpose is just to give an idea to work around things rather than spending hours on them, just work smarter and cook up some solid study plans which could make you feel better at the end of the day.

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