Projectile Motion

-What is projectile motion? This term mainly introduce in the physics 

-This is very interesting term or we can say topic because application of this are very interesting 

-To know about what is projectile motion lets taken an example. Suppose we throw a ball in upper direction but not exactly in perpendicular direction i.e. somewhat tilt in angle then by using this projectile motion concept we can find –

 -Flight time of projectile, T =  , T (2usinθ)/g

       
         -Height of projectile, h= (u^2 〖sin^2θ)/2g

         -Range of projectile, R=(u^2 sin2θ)/g

Definition of Projectile motion:-

When an object is move under an acceleration whose direction is different from the direction of initial velocity then direction and magnitude of velocity changes with time OR we can say Body move in a curved path in a plane      

Ex: Bullet fired form a rifle and body drop from the window of a moving train shows the projectile motion 

Best example to show projectile motion is Angry Bird motion in the game …

- Thanks for reading my blog ......

- Write comment on this blog to get me know your requirement if you have

 For more information in simple and in proper way follow my blog .......

- To study the science topics in simple way and in proper manner follow my blog

  "Science Hub"  http://azsimplesciencehub.blogspot.com

-To know about different profession in short and in proper manner follow my blog 

  "Profession Check"  http://azprofessioncheck.blogspot.com

Important Physics Definition

Important physics related definition in simple way 

1)Force (F): Force is nothing but it is product of mass(m) and acceleration(a)
                Force is given by  F=ma 









 2)Pressure (P): Pressure is ratio of Force(F) to the area(A) upon which it act
Pressure is given by  P=FA











3)Density: Density is ratio of mass(m) and volume(v). It is use to find how heavy an object is relative to its size.
      Density is given by   p=m/v










4)Efficiency: Efficiency is the ratio of output to the input. This output and input can be any means it may be energy ,power etc.
Efficiency is use to find how much work or energy conserved in a process.
A perfect process would have an 100% efficiency. But this is impossible in practical use.
Efficiency= Output/Input   
For getting efficiency in percentage multiply the ratio by 100

5)Potential Energy (U): It is the energy that is stored in a system.
The body have gravitational potential energy when object has been raised above the ground.It is product of mass(m), acceleration due to gravity(g) and height(g) from which object fall.
Potential energy is given by  U= mgh

6)kinetic energy (E): kinetic energy is the energy that is possess due to motion of an object.
It is product of mass(m) and square of velocity(v) of an object at which object moving.
kinetic energy is given by   E=1/2mv^2













7)Momentum (P): Momentum is the product of mass(m) and velocity(v) of an object.
momentum is given by P=mv










8)Voltage (V): Voltage is the product of current(I) and resistance(R) occure in the circuit.
Voltage is given by V=IR 

9)Work (W): Work is product of force(F) act on body and distance(D) covered by it.
Work is given by W=FD











10)Power (P): Power is product of voltage(V) and current(I) in circuit
Power is given by  P=VI

 - Thanks for reading my blog ......

- Write comment on this blog to get me know your requirement if you have

 For more information in simple and in proper way follow my blog .......

- To study the science topics in simple way and in proper manner follow my blog

  "Science Hub"  http://azsimplesciencehub.blogspot.com

-To know about different profession in short and in proper manner follow my blog

  "Profession Check"  http://azprofessioncheck.blogspot.com

Important physics related definition in simple way 

1) Length: Length is measurement of distance between points.  Eg. Scale

Scale 

2) Mass: Mass is sum of quantity of matter present in the respective body
               it is a scaler quantity, as it is independent of direction

3) Time: Time is what a clock read.

4)Volume: Volume is the quantity of three dimensional space enclosed by a close surface
                    It is a scaler quantity






5)Distance: Distance is length between points .Say A and B are two point and L is length between                         them. 
                   This is scaler quantity as direction is not matter


6)Displacement: Displacement is shortest distance between points. Say A and B are two points and L is displacement between them.
Displacement is a vector quantity as direction is matter in this case                           
Displacement is always less than distance but it exactly same only when line is straight
If a body start moving and come back to its original position (or starting position) then that body have Zero displacement but its distance is its total length it cover
 e.g. A clock hand have zero displacement but its distance is as it cover




7)Speed: Speed is the ratio of total distance covered to total time taken or we can say it is distance covered in a unit time (in 1 second).
 This is a scaler quantity as distance is scaler quantity


8)Velocity: Velocity is ratio of total distance or total displacement to total time taken or we can say it is displacement covered in a unit time (in 1 second).
 This is vector quantity as displacement is vector quantity
 Note: Here you will get confused in speed and velocity so the difference is, when we find speed we have to consider time taken to complete distance between point  but in finding velocity we have to consider displaement i.e. shortest distance between point

9)Weight: Weight is force exerted by body due to gravity
            The difference between weight and mass is force of gravity which only act in case of weight.
             It is vector quantity as gravity is acting in downward direction











10)Acceleration: Acceleration is ratio of change in velocity to total time
                         it is vector quantity as velocity is vector

- To study the science topics in simple way and in proper manner follow my blog
- Write comment on this blog to get me know your requirement if you have
Subscribe My Blog "Science Hub"
http://azsimplesciencehub.blogspot.com
http://azprofessioncheck.blogspot.com

                                                        Newton law of motion 

 What is it? where to use it? What are those laws?
- As we all know Sir Isaac Newton was the wonderful scientist in this world
-This scientist had a very great and huge research in his life
- As we can see behind every possible research there was a name called Isaac Newton
- In this also newton found out three laws regarding motion that we see in our day to day life .so now    let study this law in a scientific manner .

So lets start the concept of Newtons law of motion
There are three law given by Newton are as follows

1) Newton first  law of motion
-This law state that "a body is said to be in the state of rest or in state of motion unless or until an external force is act upon the body "
- To know what actually it mean let take an example.
- Suppose a boy push a car what will happen it run in the direction of push and follow the same path    right. But if he want to stop or change the direction of car he have to apply an external force on that    car.This is example of a moving body similar to this if this car is stable or standing on the surface        and he want to move this car then here also he have apply an external force on that car.
- This nothing but newton first law .

2) Newton second law of motion 
-This law state that" The rate of change of momentum of a body is directly proportional to force applied and this change in momentum takes place in direction of the applied force " .
-The acceleration of an object depend directly upon the object and inversely upon the mass of object --So as the force on object is increase ,acceleration of an object is increase. As the mass of an object is increase the acceleration of object is decreased.
-Example of Newton second law of motion
1) If same is use to push a truck and push a car the car will have more acceleration than the truck because of less mass
2) It is easy to push an empty cart than a full one
3) Designing the racer bike or car to increase their speed by reducing weight

3) Newton Third law of motion 
- This law state that "for every action there is equal , opposite ,and instantaneous reaction "
- This law simply mean that for every action there is always be a same reaction but just in a opposite    direction
- To understand this concept let see the following example
1) Best and simple example is if you slap on the somebody without a reason then reply from the other side will be same i.e. he or she also slap you
2) Push a pendulum in the direction with some force
3) drop a ball with some force the bonce will be same

- To study the science topics in simple way and in proper manner follow my blog
- Write comment on this blog to get me know your requirement if you have
- Thanks for reading
                       
              Subscribe My Blog           "Science Hub"

https://azsimplesciencehub.blogspot.com/?m=1

                                Equation Of Motion 

- This topic is nothing but there are some equation found out which are related with the motion.
- These motion are none other than the motions which we are doing in our daily life.
- We must see that how these great formulas are found by scientists because by just using of these formula we can find related things in motion.
- In this what i mean if you see a car or a man moving on a road and with help of some given information you can actually find the related things regarding this man or car, regarding things means speed, time etc.

- Now lets start the topic in detail;
- There are mainly two types of motion occure :-
A) Motion in a straight line with constant acceleration
B) Motion occur under the acceleration due to gravity

Now following are the equation of motion :-
Consider these notation regarding the equation
 s = Distance (m)
 u = Initial Velocity (m/s)
 v = Final Velocity  (m/s)
 t = Time (sec)
 a= Acceleration (m/s^2)
 g= Acceleration due to gravity (m/s^2)
 h= Height

A) Motion in a straight line with constant acceleration
    1. s = u + at
    2. s = ut +1/2at^2
    3. v^2 = u^2 + 2as

B) Motion occur under the acceleration due to gravity
     1. v = u + gt
     2. h = ut +1/2gt^2
     3. v^2 = u^2 + 2gh

- Value of g= 9.81 m/s^2
- Here as we all know force of attraction is always act in downward direction so we use g
- But if the body or force is act on the upward direction then at this time use '- g' instead of 'g'




- To study the science topics in simple way and in proper manner follow my blog
- Write comment on this blog to get me know your requirement if you have
- Thanks for reading
                         
                        Subscribe My Blog "Science Hub"

https://azsimplesciencehub.blogspot.com/?m=1

(वास्तुशात्र ) Traditional Hindu Architecture and Directions 

East Direction:

The rising direction...pitrustan suchak ,fire intensity is greater at this direction ,Indra is the guider of this direction.
This is entry gate for sunlight.So keep east side of our house is empty.

West Direction:

This is sunset direction.
This direction is for happyness.This is main for air and water. Air is always happy and naughty thats why this directional home people are always happy and funny.

North Direction:

This is opposite to south direction.
This is water obtaining direction.North direction is blessed by Lakshmiji.So this side direct greater amount treausere source obtaining.So light comming from this side is good for our home.

South Direction:

It is opposite to north direction.This direction is occupied by "Prithvi Tatva".This direction is under the power of God YAM.Hence this direction is called ..Muktipradan..

Things which are under the different planets:

Sun: light, lamp, power, things use in official work,

mercury: books ..granth, study room

Moon: water in home,milk etc

Mars: foods,dining hall,

Jupiter: air flow,rooms,warship spot

Venus: weak wall,entertainment things,wife or lover,musical instruments

Saturn: garbage,black color animal,ferrous contain things

Good spot for building house:

-For selecting a spot for house dig a one feet hole in ground.Filled it with full of water, allow it for   24 hours.After that if water remain in the hole or absorbed in small quantity then its a very good   spot for building house.
-If half water is absorb and half is empty then this is good spot.
-If water fully absorb or if crack form then it is bad spot.

Plot shape is important:

- Plot with square shape is very good
- Triangular shape will drop you in coart 
- Circular plot will show unbalance of the landlord
- Pentagonal shape plot is not good it show sadness many time

About kitchen room:

- It must between east and south direction
- The marble in kitchen is of 'L' shape and its face towards east side
- Height of the kitchen marble is 32"
- The distance between gas burner and refrigerator should be less
- Colour of kitchen walls should be of faint in colour
- Avoid to use white colour of surface tile     

About bathroom:

- For this east side is good to refer or at west,north and south-southwest cornerside
- If front door of house is at east side then bathroom should be at east side
- Washing area near the bathroom refer good
- Slope of bathroom tile is in east or north direction
- Bathroom wall colour is skyblue or any faint colour

About latrine:

- Many times ago or 50 years older time there is no laterine inside the house
- But due to lack of space laterine in build inside the house
- Right spot selection is needed for laterine spot
- south,west,south-east,north-east are the good direction for laterine
- If laterine is on south-west direction then its height is build quite broad.
- When it is in use our face is not towards south or west direction.Consider this points at the time of      construction
- For water taps east,west and north are good directions for water taps

About study room:

- Should be specious and silence
- Build in east or north direction
- Sitting arrengement is in east or north face
- Room colour must be of faint and window cover cloths may be dark
- Flowers,flowers pots,pictures of freedom fighters or any motivational things will increase the love      towards study
- Children studyroom should be clean

How to dig a well:

-Always dig in circular shape because square shape will impact bad on life
-Well,water tank etc. never place near the entry gate of house
-Well dig in east,west or north direction will be better

About shop or hall:

- Short entry gate and behind part is long of shop and hall will impact bad on business
- Triangular shape hall or shop will impact very bad
- Never build irregular shape or for the showcase exact in front of hall or shop because it distrube the     mind of owner   or worker
- Outside of the hall always try to keep it clean and should be free of obstacles and exited
- Flower is of less resisting texture and of less inclindness
- Place for warship is at north-east direction and should be clean
- For staircase is building except north-east direction
- Cupboard,showcase,or other thing place in middle of south-east direction
- North east part is make free for come-go

Scaler And Vector Quantity

-As we all hear the words scaler quantity and vector quantity but we don't know the real meaning of that and
- we think this is a difficult concept as it seen from the name but actually it's not like that
- These are just two quantity came to exist for differentiate. So let's start what simply it mean

The two types of quantity are
1) Scaler quantity 2) vector quantity

Scaler Quantity :

- A scaler quantity is a one dimensional measurement of a quantity 

- It is a physical quantity that can be described by a single element of number field such as a real number or we can say scaler quantity is a quantity that has only a numerical value and with just this numerical value the sentence is complete and meaningfull too.
- now our next quation is but what is that one dimension so answer is that one dimension can be any like distance (m) ,time (T), mass (M) etc.
Ex. 1)This ball is of 2 kg
      2) Window size is 80 cm

- If we divide one scaler quantity by other scaler quantity we can get scaler quantity  as a result
eg. Distance / Time = Speed

Vector quantity

- A vector quantity has magnitude as well a direction also.

- It simple mean that to describe any quantity as a vector quantity only magnitude or the direction not     make the meaning sentence.
- Vector quantity are velocity, acceleration, linear momentum ,force etc.
ex. 1) Bike has 20 velocity
      2) Man turn right
      3)  Ball has 20 N weight
- From the above sentence we not get the right meaning for that sentence
- So correct sentence are
1) Bike has 20 m/s velocity in right direction
2) Man move 2 meter in the right direction
- Now this become a meaningful sentence

                          Physical Quantities 

- Before starting this topic in a conceptual manner the first question coming to our everyones mind that why we study this,what is use of this and why this all quantities and its units are in exist.
- So if you have queries like above then it is obvious. So lets start and clarify all the queries regarding this.

1) As we all know we are leaving in a world of science i.e. In this world every day a new technology , new concept are invent by any person at any place
2) And we know that this invention is use by any person at any place also
3) So if a person find something and he give some specification of that thing but in his own manner then
4) The people who want to know about that thing the respective person will personally give the specifications regarding this invention
5) So to avoid all this the seven basic  unit/quantity are going to exist and because of this now, if someone somewhere find something he will convert all his invention things specifications in this seven quantities
6) And because of this seven quantities are accepted in all over the world ,every one can imagin or understanding the features of that invention
7) Now if you think why this are only seven quantities not less or more than that , so the reason is this seven quantity can acquire all the terms and except this      nothing is found
            So I hope now you can study this


- All the quantities which can be measured directly or indirectly in terms of which law of physics are describe and whose measurement is necessary are called as physical quantities.

-Or we can say that,
 Physical quantity is a physical property of a phenomenon body or substance that can be quantified by measurement or we can say that quantities which we come across during our scientific studies are called as the physical quantities.

-The international system of units is an internationally agreed metric system of unit of measurement that has been in existence since 1960. The system itself is based on the concept of seven fundamental base units of quantity, from which all other units of quantity can be derived 

The seven base quantities and their corresponding units are :
- Length (meter)
- Mass (kilogram)
- Time (second)
- Electric current (ampere)
- Ehermodynamic temprature (kelvin)
- Amount of substance (mole)
- Luminous intensity (candela)

Fundamental and derived units:
- The unit of defined set of physical quantity called fundamental quantities are known as fundamental unit and
- The Unit for all other physical quantity except fundamental quantity are called as derived unit
e.g.-Unit of speed can be derived from the fundamental units as,
        Unit of speed =Unit of distance /Unit of time = m/s =ms^-1

Scaler and Vector quantities

- Physical quantity which have magnitude only and no direction are called as scaler quantity
e.g.- mass, speed , volume, work, power, energy, etc.

- Physical quantity which have magnitude and direction both are called as vector quantity
e.g. -displacement , velocy , acceleration , force, momentum, torque, etc.

   What is Equilibrium? What are the types  of Equilibrium ??

- When the net force acting on the body is zero
- Equilibrium is defined as a state of balance or a stable situation where opposing forces cancel each other out and where no changes are occurring
- Suppose the force acts on the left side the equal force would be acting on  right side to balance it.Similar effect would be on up and down that balance each   other forces.
- Or we can say, equilibrium of a body is defined as state when all the forces and actions acting on the body nullify each other resulting in a stable balanced and unchanging position.It is the stage when body is either in state of rest or moving with a constant velocity

-Types of equilibrium

There are mainly three types of equilibrium :-
- Stable Equilibrium
- Unstable equilibrium
- Neutral equilibrium

1) Stable Equilibrium 

- When forces or disturbing moment is applied on a body such that on removal of that force or moment the body return to its original position is called as stable equilibrium.
- A body is said to be in a stable equilibrium if after a slight tilt it return to its previous position
- In such equilibrium the centre of gravity of body lies below the point from which it is suspended or supported
Ex: A table on a floor
      bottle lying on its base
      heavy base of vehicle


2) Unstable equilibrium
- When forces or disturbing moment is applied on the body such that on removal of that force or moment the original position is called is unstable equilibrium
- Or we can say, if a body does not return to its previous position when sets free after a slightest tilt
- In such equilibrium the centre of gravity of body lies above the point from which it is suspended or supported
Ex: A pen standing on its point
      Rod standing vertically is slightly disturbed from its original position


3) Neutral equilibrium
-When body attain a new position when disturbed from its previous position called neutral equilibrium
-When forces or disturbing moment is applied on a body such that on removal of that force or moment the body doesn't retain its original position but attain a  new position called neutral equilibrium
- In such equilibrium the centre of gravity of body coincide with the point of support or suspension
Ex: Ball moving on the ground
A pencil lying horizontally
An egg lying horizontally on the flat surface




To study more physics topic in simple way subscribe my blog SCIENCE HUB

azsimplesciencehub.blogspot.com

                            Centre of Gravity  {C.G.}

- The only to understanding the gravity is What goes up must come down means towards the earth .We think gravity is force of attraction that pulls things downward (toward the earth centre) but it does not always work like that. sometime gravity can make things turn and topple over, especially if they are high up and unbalanced.

-Centre of gravity is the point at which entire weight of a body may be consider as concentrated so that if supported at this point the body would remain in equilibrium in the position

-Centre of gravity of a body is the point through which resultant of all the weights of the constituent particle act 

Eg. A pencil  balance on the finger tip, ship balance in the time of cyclone, A boy balance him on the rope with help of stick

 

- The location of a body's centre of gravity may coincide with the geometric centre of the body, especially in a symmetrically shape object composed of homogeneous material .An asymmetrical object composed of a variety of a materials with the different masses, however is likely to have a centre of gravity located at some distance from its centre 

-In physics, centre of mass of a distribution of mass in space is the unique point where the weighted relative position of the distributed mass sums to zero or the  point where if a force is applied it move in the direction of force without rotating 

-The distribution of mass is balanced around the centre of mass and average of the weight position coordinate of the distributed mass define its coordinate.

 Calculation in mechanics are often simplified when formulated with respect to the centre of mass. (centre of gravity or centre of mass)

 

Ex. The moon's centre of mass is very close to its geometric centre(it is not exact because the moon is not a perfect uniform sphere) but its centre of gravity is 

slightly displaced toward earth because of the stronger gravitational force on the moon's near side 

-In some cases such as hollow bodies or irregularly shape objects, the centre of gravity (or centre of mass) may occure in the space at a point external to the physical material 

Eg. centre of a tennis ball 

Important points about centre of gravity are as follows 

-centre of gravity of a body is the point through which resultant of all the weights of the constituent particle act 

-The position of C.G. is indepedent of wheather the body is in state of rest or in motion.The C.G. of a body may be inside or outside the material of the body

-Under the action of gravity a body tend to orient itself with the C.G. at the lowest

-It is a hypothetical point where entire mass of an object may be assume to be concentrated to visualise its motion 

- A point from which the weight of a body or system may be consider to act.

- In uniform gravity it is same as the centre of mass