,Saleemians Khopcha Concept
, Contents
1. Units and Measurements....................................................................................................1-20
2. Vector......................................................................................................................................21-37
3. Kinematics .............................................................................................................................38-72
4. Newton's Laws of Motion & Friction.......................................................................73-115
5. Work, Power and Energy..........................................................................................116-144
6. Circular Motion .............................................................................................................145-159
7. Centre of Mass ...............................................................................................................160-193
8. Rotation ...........................................................................................................................194-247
9. Gravitation ......................................................................................................................248-266
10. Mechanical Properties of Solid ................................................................................267-276
11. Fluid Mechanics and Dynamics ...............................................................................277-310
12. Gas Laws ..........................................................................................................................311-319
13. KTG and Thermodynamics.......................................................................................320-344
14. Simple Harmonic Motion ..........................................................................................345-363
15. Wave ..................................................................................................................................364-397
16. Heat Transfer .................................................................................................................398-430
17. Error and Measurement ............................................................................................431-449
Lets
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Saleem.nitt
, 4 Newton's Laws of Motion & Friction
Force —→ Push or Pull
ns[k HkkbZ bl chapter esa mains or
Types of Force
advance weightage <aw<us dh xyrh er
djuk Mains es gj lky blls question Gm1 m2
iwNs tkrs gS but advance es cgqr gh de 1. Gravitational force mg,
r2
question iwNs x, gS but iwjh mechanics 2. Electromagnetic force
dk ;s fundamental chapter gS tks iwjh
Tension force, Normal force,
physics es use gksxk] so bl chapter Friction, Electrostatic force,
dks gyosQ es uk ysA magnetic force etc.
3. Strong nuclear force ;g ge 12th
4. Weak nuclear force class es i<saxsA
INERTIA
Newton 1st Law (Law of inertia)
0 It is the tendency to resist the change. 0 A body continue to be in state of rest or in state
0 It is the property due to which a body wants to be of uniform velocity (st. line) until or unless net
in state of rest or in uniform motion in a straight external force acts on it.
line.
Newton Second Law If m Const
0 Mass is the measurement of inertia.
dp P = mv Fnet = ma
Momentum Fnet =
ext dt ext
It is the net motion contain in the system.
d(mv) dv dm
Fnet = = m +v
v ext dt dt dtv
P = mv m
If mass of system is constant then
ns[k HkkbZ ckn es ge ;g ns[ksaxs kissi body ;k system dk mdv
Fnet = = ma
momentum fudkyus dk rjhdk gksrk gSA ext dt
Pbody = Mbody vcom of body vcs bldk eryc gS gj txg F = ma er
Com eas
yxk nsuk tSls rocket propultion es mass
Psystem = Msyst. vcom of syst.
variable gksrk gS rks og¡k F = ma ugh yxk
ldrsA
Newton Third law
0 For every action there is equal and opposite
reaction at the same time, simultaneously of the
same nature.
, Contents
1. Units and Measurements....................................................................................................1-20
2. Vector......................................................................................................................................21-37
3. Kinematics .............................................................................................................................38-72
4. Newton's Laws of Motion & Friction.......................................................................73-115
5. Work, Power and Energy..........................................................................................116-144
6. Circular Motion .............................................................................................................145-159
7. Centre of Mass ...............................................................................................................160-193
8. Rotation ...........................................................................................................................194-247
9. Gravitation ......................................................................................................................248-266
10. Mechanical Properties of Solid ................................................................................267-276
11. Fluid Mechanics and Dynamics ...............................................................................277-310
12. Gas Laws ..........................................................................................................................311-319
13. KTG and Thermodynamics.......................................................................................320-344
14. Simple Harmonic Motion ..........................................................................................345-363
15. Wave ..................................................................................................................................364-397
16. Heat Transfer .................................................................................................................398-430
17. Error and Measurement ............................................................................................431-449
Lets
Share your video review on Instagram and tag me! I'd love to see it!
Join my Telegram channel & Insta.
Star t
Saleem.nitt
, 4 Newton's Laws of Motion & Friction
Force —→ Push or Pull
ns[k HkkbZ bl chapter esa mains or
Types of Force
advance weightage <aw<us dh xyrh er
djuk Mains es gj lky blls question Gm1 m2
iwNs tkrs gS but advance es cgqr gh de 1. Gravitational force mg,
r2
question iwNs x, gS but iwjh mechanics 2. Electromagnetic force
dk ;s fundamental chapter gS tks iwjh
Tension force, Normal force,
physics es use gksxk] so bl chapter Friction, Electrostatic force,
dks gyosQ es uk ysA magnetic force etc.
3. Strong nuclear force ;g ge 12th
4. Weak nuclear force class es i<saxsA
INERTIA
Newton 1st Law (Law of inertia)
0 It is the tendency to resist the change. 0 A body continue to be in state of rest or in state
0 It is the property due to which a body wants to be of uniform velocity (st. line) until or unless net
in state of rest or in uniform motion in a straight external force acts on it.
line.
Newton Second Law If m Const
0 Mass is the measurement of inertia.
dp P = mv Fnet = ma
Momentum Fnet =
ext dt ext
It is the net motion contain in the system.
d(mv) dv dm
Fnet = = m +v
v ext dt dt dtv
P = mv m
If mass of system is constant then
ns[k HkkbZ ckn es ge ;g ns[ksaxs kissi body ;k system dk mdv
Fnet = = ma
momentum fudkyus dk rjhdk gksrk gSA ext dt
Pbody = Mbody vcom of body vcs bldk eryc gS gj txg F = ma er
Com eas
yxk nsuk tSls rocket propultion es mass
Psystem = Msyst. vcom of syst.
variable gksrk gS rks og¡k F = ma ugh yxk
ldrsA
Newton Third law
0 For every action there is equal and opposite
reaction at the same time, simultaneously of the
same nature.
