Summary Chapters 9 & 10: Electric and Gravitational Fields, Capacitors
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Course
Physics A-level
Institution
Bachillerato
Book
A-Level Physics for AQA
Chapters 9 & 10: Electric and Gravitational Fields, Capacitors. Physics A-level, AQA. It includes: gravitational fields, gravitational potential, orbits and gravity, electric fields, electric potential and work done, comparison. Capacitors: charging and discharging & more about that.
tories thats Why a Force Field is
◦
region in which a body experiences a non -
Contact force te presented by VECTORS W ARROWS
in direction
painting
.
RULES :
diagrama :
◦
Fields are defined in an Points in Space & time
V
◦ Field lines NEVER Cross
I
L
◦
Closer field > Closer lines
> E <
mon
"≤ 7 r
°
⑤⑧IÑW ⑧⑧ •
EVERYTHINGW / MASS : ^
""
Massot EARTH CREATCS Field
-
:
a
5.98×102 "
kg experiences Field
-
a
GRAVITAIIONAL vs ELECTRIC :
Mass
atractivo
cnarge
AHRACTIVC or repulsivo
| DIFFERENCES
non Contact forces
| similarities
-
Inverse Square law 1
rl
•
GRAVITATIONAL :
Newton'S Universal law of gravitation : alt partidos w / Mass in the Universe altractall
3ʳᵈ LAW (ACTION -
RE Action) Other Particle .
F=_G✗M
( =/ Gravitational tieldstrengtn
G
>
G-itbtxlo.MN
EQUATION :
M
( N) (m) Particksneedtobe :
>
appliestopcint Mass
-
Sphlrical
-
uniform density
( -
ve ) Force > atractiva
radiusof Earth > data booklet
, FM -
m
-
_ O
Force of Attraction on Middle Mass :O
Fm M - =
O RULES :
Newton 's 3ʳᵈ law >
◦
gravitation al forcesarealways atractivo
◦
field lines follow direction gravitational force .
Gravitational Fields : ◦
higher density >
Stronger density
PROBE > test Mass ◦ al Ways point towards the Mass Creating the field .
Wing
F-
mg
F
i. > definition of gravitation at :
Force per unit Mass experienced by a
g-
-
m
field strength Small Point Mass (m ) at that Point .
q-9.8INkg-imwsFORCF.CN SURFACE OF EARTH .
GREATER FORCE ?
|
L FIELD ? mm
|µ ?
the Same m
>
<
( position on Earth is the Same)
Radial Field Uniform Field ( Constant) >
Surface of Earth
> Field is Constant
-
v v v v v Force is Constant SUVAT
9.81 & FÍE Acceleration is Constant .
-
F
Field AROUND the equation to use
g-
:
>
-
m
Earth .
al Ways for uniform
g
> no longer
Constant
be
radiusotEar 6.4 ✗ 10º cm
GM
Can also be Used to tind the Surface of Earth
-
at
g g
.
=
>
p,
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