Physics Formulaes 2019

Physics : List of Formulae Circular Motion

θ=tan-1(v02/Rg) => angle of banking Vertical Circular Motion Tension Highest Point

Velocity

Total Energy

√(gr)

5/2 mgr

Mid Point mv2 / r

√(3gr)

5/2 mgr

Lowest Point

√(5gr)

5/2 mgr

mv2/r - mg

mv2/r + mg

1/T = n or ώ=2π/T v=rώ f v= r*(2π/T) v= r*2πn

a=vώ a=v2/r

In U.C.M., (Centripetal accl = Linear accl) i.e. a=root(aT2+ar2)

radians

n/f

Hertz (c.p.s/r.p.s)

ώ

radians/sec ond

FCP

Newton

α

radians/sec ond2

FCF

Newton

θ

Kinematical Equations for Circular Motion 1. ω = ωo + αt 2. θ = ωot + (1/2)αt2 3. ω2 = ωo2 + αθ Gravitation

root

am = vm2/Rm

am/g = 1/Rm2/1/R2 = (R/Rm)2

T = 2π√(r/gh) where r = R+h Vc (at h) Vc=√(GM/(R+h)Vc=√gh(R+h)) Vc (on earch surface)

Vc=√(GM/(R) Vc=√gR

Rotational Motion

Ve=√2gR

Oscillations

Elasticity

Surface Tension

For bubble , always double the Area while using any Formulae above .

Wave Motion

Stationary Waves

In Melde's experiment , TP2 = constant . For Resonance Tube , e = (l2 - 3 l1 )/2 Kinetic Theory of Gases and Radiation Updating.... According to Stefan's Law ; Rate of heat is directly proportional to 4th root of absolute temperature . R α AσT⁴ Wave Theory of Light

Interference & Diffraction Electrostatics Current Electricity

Updating ... Updating ...

Magnetic Effect of Electric Current Magnetism

Updating ...

Electromagnetic Induction & Alternating Current

Electrons & Photons

Atoms , Molecules & Nuclei

Semiconductors To be updated : Ic/Ie ; Ic/Ib

Communication Systems

μ is coefficient of friction between tyres of car and road surface Definition angular displacement angular velocity angular accelaration UCM Periodic time Frequency Centripetal force Centrifugal Force Banking of road Angle of banking Conical Pendulum

θφχϒ+I12λραεπώ

Definitions Newtons law of gravitation

root Kepler's law of motion - Keplers First law (Law of Orbit) - Keplers Second Law (Law of equal area) - Keplers tjhird law (Law of Period) Binding energy Critical Velocity Escape velocity Periodic time of satellite

Unit & dimension G (SI) = N m2/kg2 G(C.G.S.)= dyne cm2/g2

Definition Moment of Inertia

θφχϒ+I12λραεπώ

displacement accelaration

ns law of gravitation

c time of satellite

.)= dyne cm2/g2

Chapter Circular_Motion

symbol

Item

Kinetic Energy Gravitational Circular_Motion Circular_Motion

Gravitational constan θ ώ

Circular_Motion

α

Circular_Motion Circular_Motion Circular_Motion Rotational_motion Moment of Intertia Force Rotational_motion Radius of Gyration Rotational_motion Torque Rotational_motion Angular Momentum Oscillation Period of S.H.M.

E G

elasticity elasticity elasticity elasticity surface_elasticity surface_elasticity

Surface Tension

surface_elasticity emissive power surface_elasticity Electromagnetism Magnetic Flux Electromagnetism Magnetic Indiction

DimensionScalar or Vector

scalar G (SI) = N m /kg radians radians/second 2

2

radians/second2 n/f

Hertz (c.p.s/r.p.s)

FCP FCF I F K τ L T f

Newton Newton Kg m2 Newton m Nm kg m2/s s Hertz or c.p.s or r.p.s

Frequency of S.H.M. Stress Modulus of Elasticity Strain Bulk modulus, Modulu Compressibility Surface energy

S.I.

L2 M1 T0 L1 M0 T0 L2 M1 T-1 L2vector M1 T-1(direction is same as ώ) M0 L0 T-1

N/m2 or Pa

L-1 M1 T-2

N / m2 m2 / N Joule N/m J/m2

L-1 M1 T-2 L1 M-1 T2 L2 M1 T-2 L0 M1 T-2

E

J/m2 W/m2

M1 L0 T-3

φ B

weber (Wb) Wb/m2 - Tesla (T)

M

K

T

Electromagnetic_indco-effiecent of self induction / self inductance

L

Mutual Inductance

M

=Volt/ L2 M1 T-2 I-2 scalar (Ampere/secon d) = volt second/ampere = ohm second = H (henry) generally expressed in H

Electromagnetic_indImedance Electromagnetic_induction Electromagnetic_induction wave_ magnent

Z

dphi/dt

ohm

C.G.S

Remarks

G(C.G.S.)= dyne cm2/g2

dyne cms Same as work

irection is same as ώ)

dyne/cms2

Erg dyne/cm

Modulus of elasticity is same as Stress (bec strain does not have units) Ratio hence no unit