Physics basic concepts
Basic Math
General trick to approach
questions in physics
steps to follow while solving any numerical
1 Read the Question and understand it
2 Write what is given
3 Write the theory concept and definition of
important terms relative to the
Question
4 Draw diagram or graphs iff applicable
5 Write formulae used
Dimensional Formula
units of measurement
Conclusion of the formula in a single
Statement
6 Solve the numerical math part and
represent the final answer with its
SI unit
Sagan LAR YEITOR Sometimes scalar quanties havedirection
eg electric current it has direction butdoesnt
followvectoralgebra
t eg electricflux c it isscalarbuthasdirection
volume temperature temperature velocity
a
time 4
speed U valueweight tothrust
eg work when 0 180 btw F'and 5aunties physical that
haveonlymagnitude
Quantities
thatcannotbestudiedwithoutdirection
ietheyhavemagnitude
adirection SOME important terms of vectors
theyfollownormal
algebra theyfollowvector
algebra s magnitude
ofan
g
TtIEgspeedvolumemass isequalnus
man
energy meeee
are displacement
velocitydipolemoment
y
zero un v no
I
Parallelvectors
whenthe magnitude of
Componentsof a vector
I an Acoso
agean t.t.am
ay asino
the vectorbecomeszero I as
µhere I'll 5 but there is an ais n
mannnn ayy anie the vectors are in demotionaviator cannas's
the same direction unitvectors iginmagnitude t y
ne
trigonometricratiostoremember Generactormotunitvectonacosoatsino
ay
anti parallel mean magnitudeof Hatay
tansy
s
IItalantayatazes t he
Touts off MMation
iiiii ammo
n nooooo
Ifthenetexternalforce
iszero abodycontinuesto the loop
i
d th
when aparticuiswninedinavertinearae
beinitsstaggginonat oneproduct
offorceandtimewhichis v duhagh
j
rest thechangeinmomentumaawayisknown caseI ie duagroroses
thispropertyofastu.geggiscaned
as Impulse vectorquantity airsoso.rucosaparticleoscillates
inthe
Impulse tort toraxtimeduration lowerhalfcircleAB A
Stcanalsobedefinedas waitbutunabletocompletethe
loop
J Float
secondlawofmotion case particlecompletes
the theloop
Gantrisin.is
therateofchangeofmomentum ofabody netconcetowarastnecentre centripetalforce
isdirectlyproportionaltotheappliedforceand
takesplaceinthedirectioninwhichtheforceacts T mgcoso.mil
I'a II ta wgreascosas
onuniformsinularmotiontheforceacting asventusagreecos
fora bodyhavingconstantmass ontheparticlealongtheradiusandtowards
thecentrekeepsthebodymovingalongthe 17Condition
forcompletingtheloopin
man n
circularpath socalledascentripitalforce theparticlewillcomplete
theloopit
Hence F mat thestringdoesntslackatnighest
pointe
Hence smgzo
If the body is at rest or moving with a
constant speed in a straight line, it will remain
at rest/keep moving in a straight line with a
constant speed unless it is acted upon by a force.