Other
AQA Physics Mechanics and Materials notes
- Course
- Institution
- Book
Full notes on Section 3 Mechanics and Materials from the textbook ‘AQA A Level Physics’ with diagrams to help better remember the contents.
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
More summaries for
-
AQA A-level Physics Paper 2 All-in-one Notes
-
AQA A-Level Physics Paper 1 All-in-one notes
-
A Level Physics - Chapter 1 (Particles, Quantum Phenomena) Revision
Seller
Follow
Doobeans
Content preview
Forces inEquilibrium
and direction
Vector is a
physical quantity that has both
magnitude .
Scalar is a
physical quantity that has
magnitude only .
The force F can be resolved into 2
perpendicular components .
↳ F O of action of force
cos
parallel to line at
angle -0 to the line the
:
a .
F
perpendicular to the line
↳
sin Q :
.
If two forces which act point object
are
equal and
opposite to each other on a
,
the
object is in
equilibrium .
↳ resultant of the two forces is zero .
↳ the two forces are balanced .
forces act resultant of
When 3 on a
point object ,
resultant -
- O
only
if the
any
two
forces and to force
is
equal opposite the third .
Resolve force
each and
perpendicular
↳
along the same
parallel .
↳ Balance the
components along each line .
The moment of force
force the
perpendicular distance from the line of action
•
a is x
of the force to the point .
Principle of moments States that for
system equilibrium
•
a in
,
sum of clockwise moments =
sum of anticlockwise moments
Centre of effect
mass is the
point through which
single force the
body has
turning
•
a on no .
Moment = F x d
, Sz
S
^
d. da = W t W t
Wo
< ,, , z
,
•
-
' W d
, ,
=
Wzdz
v pivot
V v
W,
Wo W2
S .
^
Sy
n
d. I dy
Moments about X :
Moments about Y : e
Y
'
i
Wdx S D=
Syd Wdy
=
..
w
Wdsc S =
Wdy pillar pillar
Y
Sy
= ,,
D se
D
L S
D
A of and forces
couple equal opposite acting body but not
along line
•
the
is a
pair on a
,
same .
Moment force action forces
of couple perpendicular distance between lines of of the
°
:
a x .
F Fa t F Ld -
x ) =
Fx + Fd -
Fx
^
x d -
x = Fd
( K 7
•
The total moment the of the
p
is same
, regardless
F about which the taken
point moments
< x are .
d
An stable released
object in
equilibrium will return to its
equilibrium position if
displaced then .
If an
object in unstable
equilibrium is
displaced ,
the displacement will increase
,
causing
the
object to be further from the
equilibrium position .
tilted too far
For to
For
tilting to occur
,
toppling occur
,
b
line of action of
< , Fd >
wzb weight
F s - - -
a-
-
•
passes beyond the
pivot
d
•
VW
v .
p
•
✓
p
w
Vector of of forces 0
sum
triangle F Fa Fs
: =
t t
,
Conditions of of
equilibrium body I Resultant force must be
:
a .
zero .
2 .
Principle of moments must
apply .
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Doobeans. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
50843 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now