tuilibrium
t is the State of rest of the action of
a body under torces
When a body is subjected to different forces and even a: ter_ it
remains at restÞosition it is Said to be in equilibrzum
2) Conditions of Equilibr~um
For different +ypes of force systems there are different Conduitions
for Systems to be in equilibr2um
a) For Co-Þlanar Concurrent forces
There are two Conditions of eguwlibrium.
and ZFy = 0 R 0
5 For co-planar non-Concurrent forces
There are three Conditions of equiibráum
z F 0 , ZFy -
0o and 2M = 0
3) Free Body and Free Bedy Diagram (F B: D) -
a) Free body - An isolated body Separated from all other Connecte
bodtes or Surtaces iS Called free body.
Free bedy diagram (F:8:D) - It ts aD isolated v~ew of t h e body
b
representing a the forces acting with their diections and
magnitudes whether known or unkhown).
, 4) Constraints, Action and Reaction
Constraint The restraction to the motion of a body in any
direction is Called a ConStraint
Motion is
When a ball is
resting
Smooth on
NTTiTTTTTTTT77 Possible
Sur-tace horizontal motion is Possi ble but
vertical douonuard. motion 9 Motion is not
poSsi ble
restrcted by plane.
So according to Newton's gd Lauw oltrection
in obbosite e weight,
normal reaction is offered by the Constraint here Surfate).
In leneral, the action of Constrained body oh any Supbort
a
induces an equal and opposite reaction trom the. Support.
5) Types of Subborts and Corresponding Reactions
No of
Subbort 3ketch Reaction Spechcohon unknowng
1) Rollers Known reac"_
77TT which (s Lar One
to plane of
roller
2) Smooth Reaction
Surtace Lar to the One
R
Surface
Rough Two reaction
Surface 777TTTTTTn
F
Combonents Two
with unknoon
directions
t is the State of rest of the action of
a body under torces
When a body is subjected to different forces and even a: ter_ it
remains at restÞosition it is Said to be in equilibrzum
2) Conditions of Equilibr~um
For different +ypes of force systems there are different Conduitions
for Systems to be in equilibr2um
a) For Co-Þlanar Concurrent forces
There are two Conditions of eguwlibrium.
and ZFy = 0 R 0
5 For co-planar non-Concurrent forces
There are three Conditions of equiibráum
z F 0 , ZFy -
0o and 2M = 0
3) Free Body and Free Bedy Diagram (F B: D) -
a) Free body - An isolated body Separated from all other Connecte
bodtes or Surtaces iS Called free body.
Free bedy diagram (F:8:D) - It ts aD isolated v~ew of t h e body
b
representing a the forces acting with their diections and
magnitudes whether known or unkhown).
, 4) Constraints, Action and Reaction
Constraint The restraction to the motion of a body in any
direction is Called a ConStraint
Motion is
When a ball is
resting
Smooth on
NTTiTTTTTTTT77 Possible
Sur-tace horizontal motion is Possi ble but
vertical douonuard. motion 9 Motion is not
poSsi ble
restrcted by plane.
So according to Newton's gd Lauw oltrection
in obbosite e weight,
normal reaction is offered by the Constraint here Surfate).
In leneral, the action of Constrained body oh any Supbort
a
induces an equal and opposite reaction trom the. Support.
5) Types of Subborts and Corresponding Reactions
No of
Subbort 3ketch Reaction Spechcohon unknowng
1) Rollers Known reac"_
77TT which (s Lar One
to plane of
roller
2) Smooth Reaction
Surtace Lar to the One
R
Surface
Rough Two reaction
Surface 777TTTTTTn
F
Combonents Two
with unknoon
directions
