Physics Formula List

Force = Mass × Acceleration





Weight = Mass × Gravity



Moment = Force × Distance


 E_K = ½ mv²

E_p= mgh

Workdone = Force × Distance







Period = 1 ÷ frequency
Wave Speed = Frequency × wavelength
Charge = Electric current[I] × Time



Potential Difference [V] = IR



Power = IV
Energy = Power × Time




These are the formula, Please read up on the theory. :D

Physics Notes

Energy,Work and Power

Definition:

Energy is defined as the capacity to do work.

SI unit → joule [J]

Kinetic Energy[E_K*]
*K is a subscript. Like H₂O not H2O.

Kinetic Energy is the energy a body possess due to its motion

Any moving object has Kinetic Energy.

Formula → ½ mv² [1/2 × mass × velocity square]

Potential Energy[E_p*]
*P is a subscript. Like H₂O not H2O.

Potential Energy is the energy stored in an object due to is position, state or shape

Compressed Spring or a stretched bowstring has elastic potential energy

substances that can be burned have chemical potential energy.

Objects placed at a height is known as gravitational potential energy.

gravitational potential energy is the energy which a body possesses because of its position relative to the ground.

formula: mgh [mass×gravity{10 if it is on earth,otherwise stated}×height]

Principal Of Energy

• Energy cannot be created or destroyed
• must it can change its form.

Work

Work is done on an object when energy is transfered to that object.

Work done = Force × Distance

Power

• Power is the rate of work done
• Power = Work done ÷ time
• SI Unit for power is Watt[W]
• 1 Watt = 1 J/s

Physics Notes - Chapter 1- Chapter 6

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Force
-Measured In Newton[n]
-Can Cause The Object To Move,Change Speed Or Direction.[Newton 1st Law]

Balance Forces


When The Forces Is Balanced There is No Resultant Force
-If It is not moving it will stay at rest
-if it is moving it will continue to move at constant speed.

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Unbalanced Force

It Will Cause
a)A Stationary Object To Move
b)A Moving Object to
-Stop Moving
-Change Direction
-Move Faster
-Slow Down

[Newton 2nd Law]
-Force=Mass X Acceleration

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Free-body Diagram
Newton Third Law Says:
For Every Action There Is Another Equal Opposite Reaction

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Friction



Friction Is Good As It Make Things Able To Move
But Friction Is Bad Because It Wear And Tear Thing

Reduce Friction By:
-Adding lubricant
-Adding Ball And Roller Bearing etc

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Mass
-Mass(kg) is a measure of the amount of substance in the object
-Weight(N) is the force of gravity acting upon that object

Weight = mass × acceleration due to gravity
W = mg

On Earth, acceleration of free fall
g = 10 m s−2
Mass measured by beam balance and electronic balance.
Weight is measured by spring balance.

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Inertia and Mass
-Inertia of an object is the reluctance of the object to change either its state or rest, or if it is moving, its motion in a straight line.
-Newton’s first law of motion states that a body continues in its state of rest or uniform motion in a straight line unless compelled by a force to do otherwise

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Density.

SI Unit=Kg m-3

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Moments
Moment=Force X Distance
Pivot is the turning poing also known as fulcrum.

Principle Of Moment



If The Object On The Right Is The Same As The Left,
-The Anticlockwise moment= Clockwise Moment

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Center Of Gravity
-IS A Point Where The Weight In The Object Seems To Act On


It Might Not Be In The Center.
-If The Mass In An Object Is Heavier at The Top,The Center Of Gravity Is Higher.

-If The Mass In An Object Is Heavier at The Bottom,The Center Of Gravity Is Lower.

-For Uniformed Object,The Center Of Gravity Is In The Center.

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Stability
There is 3 Kind Of Stability


There Are Two Ways To Make Something More Stable.
-Increase The Aase Area
-Lower The Center of Gravity By Adding Something Heavy To The Bottom.

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Pressure[Not Needed For NA]
-Is The Amount Of Force That Is Acting On A Unit Area Of The Object.

Pressure=Force/Area
SI Unit Pascals[Pa] Or Nm-2

Pressure Due To A Liquid Column=Height X Density X Gravity