Physics In Daily Life

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INTRODUCTIONThe topic on which we are going to give ourpresentation is PHYSICS IN DAILY LIFE. It is veryvast topic so to give all the information about topic isnot possible but we have tried to present before youthe most of the valuable and useful information aboutthe topic.Also we are very thankful to VIKAS sir & whole of theELEKTRON MANAGEMENT TEAM for organizingthis event and giving us a chance to work in teams andshow our talents.

THANKS


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What Is Physics? Physics is a natural sciencethat involves the study

of matter and its motion through space time, alongwith related concepts such as energy and force. Morebroadly, it is the general analysis of nature, conductedin order to understand how the universe behaves.Physics is word derived from Greek word Physismeaning Nature

So, Physics is revealing laws of nature fromobserved events in physics.


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Branches Of Physics Classical Mechanics

Thermodynamics

Electricity and Magnetism Optics

Modern Physics


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PHYSICS IN DAILY LIFE The most basic of the sciences, physics, is all around us

every day. If you've ever wondered what makeslightning, why a boomerang returns, how ice skaterscan spin so fast, " why waves crash on the beach, howthat tiny computer can do complicated problems, orhow long it takes light from a star to reach us, you havebeen thinking about some of the same thingsphysicists study every day. So, it is related with ourlives merely.


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PHYSICS IN DAILY LIFE Today we do most of our daily routine worksusing electrical appliances. The use of electronicdevices is growing day by day. The use of

electronic devices is very common at home, inschools and at work.

Nearly all the working places and living placeshave computers, television, radio, telephone,

mobile phone, fax, air conditions, camera etc.All these things are gifts of Physics to mankind

&they have a very direct impact on our lives


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Some Phenomena Of Daily Life

Using PhysicsIn Games & Sports:-

Cycling

Skateboarding

Cricket

Acoustics In Daily Life

Motion in our lives

Curves, Centrifugal, Centripetal Forces


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Games & Sports

CyclingThe Wheel

The wheel is the most crucial element of the bicycle, it

allows the rider to roll over the ground with great speedand efficiency. Historians believe the wheel originated

in Mesopotamia sometime around 3,500 BC.

This was one of the most revolutionizing invention ofphysics which changed the whole world!!


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CyclingDrives The development of the chain drive helped make

the bicycle that we know today possible. The chaindrive eliminated the need to have the cyclistdirectly above the wheel. Instead the cyclist couldbe positioned between the two wheels for betterbalance.

This was also due to restless efforts of physicts

modern chain drive and derailleur system.


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CyclingBraking Brakes have improved as materials and

engineering know-how have evolved. For bikes tobecome more popular an effective mechanism forslowing and stopping had to be devised. Allbrakes, regardless of the mechanism, share onething in common--they increase the amount of

friction (usually on the wheel) allowing the rider toslow or stop. The design of brakes was based on Kinematics &

mechanics.


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CyclingAerodynamics Every bicyclist has to overcome wind resistance.

Newer bicycles are being designed with better

aerodynamics in mind, the human body is simplynot well designed to slice through the air.

Now bicycle designers and inventors haveexperimented in developing alternative bicycle

designs and HPVs (human- powered vehicles) withan emphasis on better aerodynamic performance.

The racing frame uses tear-shaped tubesto reduce drag.


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The Physics of Skateboarding Tricks

In the beginning, skateboarding was simple withnothing more than a two-by-four on roller-skate

wheels, the sidewalk surfers of the 30s, 40s, and50s had a straightforward mission: Start at the topof a hill and ride down. The primary goal was just

to stay on and avoid collisions; Now due tochanges in design of skateboards one can do evenstunts with the same skateboard.

Games & Sports

Skateboarding


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Skateboarding In a blur of flying acrobatics, skaters leap and skid

over and onto obstacles, executing flips and turnsof ever increasing complexity--all at top speeds.For onlookers and beginners, it can be hard to

follow the action, let alone answer the questionthat springs naturally to mind: How on earth dothey do that? While it may seem that modernskateboarders are defying the laws of physics, thetruth is that they're just using them to theiradvantage.


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Games & SportsCricket

Cricket is related to physics because offollowing reason:

Force can change anything of a object like shape,direction, etc. but force cantchange mass of an object.In cricket bowler throw the bowl and the batsman withthe help of bat apply force on ball and change thedirection.

When fielder throw the bowl in air so the transfer ofenergy take place from kinetic to potential and tokinetic energy take place.


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CricketA good cricketer always do followsthroughwith

the bat, so the force applied for longer time, theimpulse is greater and so also is the gain ofmomentum (and Velocity) of the ball.

Batsman following Through after hitting

the ball


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CricketAlmost all cricketer draw back the ball while

catching because to stop a moving ball, itsmomentum has to be reduced to zero. An impulseis then required in form of an opposite force acting

for a certain time. While any number ofcombination of force and time will give particularimpulse, the sting can be removed from catch bydrawing back the hands as the ball is caught.

Drawing back of hand


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Acoustics In Daily Life If you've had a back-row seat at a rock concert, and

could still hear, you experienced physics at work!

Physicists studying sound contribute to the designof concert halls and the amplification equipment.Knowing more about how things move andinteract can be used to manage the flow of traffic

and help cities avoid grid lock.


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Motion in our livesWell ignore constant velocity: just like sitting still

boring

But accelerating motion thats where things getinteresting

Direction of acceleration is the same as the directionof net force

Acceleration perpendicular to the velocity vector actsto change the direction of motion.


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Curves, Centrifugal, Centripetal

Forces Going around a curve smashes you against window

Understand this as inertia: you want to go straight

your body wants tokeep going straight

but the car is acceleratingtowards the center of the curve


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Another Examples Of Physics In

Daily LifeWhen we walk or run, our motion is part of laws of

mechanics

We eat food which undergoes chemical reactionsproducing heat energy which is converted intomechanical energy

When we speak, we produce sound properties of

which like pitch and intensity are studied in physics


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Bibliographywww.google.com

NCERT class 11 Physics text book

www.aip.org


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Presented By

ZENITH

Shubhkaramdeep Singh

Harpal Singh

Rajan GargRahul Garg


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Physics In Daily Life

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