Matric IEB Physics: Gravitational and Electric Fields

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, 9
pg




Newton's Law of Universal Gravitation

* SAGS

E
very particle with mass in the universe attracts
every other particle with a force which
is
directly proportional to the product of their masses and inversely proportional to the
squar
of the distance between their centres.
Distance between
centres

r




M1 - M2



gravitational
Proportionalities .
Universel


constant >x10-"N ?
Lg
Equation :
. . m




·




FJ MimsMass otobjectsaem F M, Mz

Gravitational attractive
Force N

Da
Farz

The the mass the
greater of the objects , greater the force of attraction and vice versa.

The the distance between the objects the smaller the force
greater ,
of attraction and uv.

Newton's 3rd law


E Force ?
.
g
.




1
. One mass is doubled
F& mima
&
2 mimz
.. If



2 . Both masses doubled
F& mima 2m, 2m2

.. 4F


.
3 r is doubled

For in
a i a im
F will be 4 times smaller I Unit of 6 :

, M2
M

doubled, halas FG
↳Both masses
is ~
2




Er

:. 4 : 16 F 6F
2
NXm

Eg kg
. N m2 . .

high