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Summary physics134 newtons laws

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summary of whole course and step by step examples and explanations

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  • June 2, 2023
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kayla58
, NEWTONS LALS eg. Split the following into 2 perpendicular components

imme
of forces


force object
normally applies push pulling action masine
to a or on an

a
_mgcosc
force is considered an interaction between things Mgr

direction in
The which the force acts is important(vector)

and direction)
Me tugboats pull tanker, find the resultant force
eg. Two a




svir?!
Displacement 2km, 450
=




Velocity 60km.h North fx ficos45 f2x fzCos3Y
=

=
=




Force=12N, down syfisines Fy=fusise

Adding
mean
Vectors Break
*
up into components


1 >
Rx f(x fzx 40(os45 30Cos 37 52,3N
=
+
=
+
=




E




I
F, E
-
down
y y
-


R O
+ ↳
-
7
=Ry S Ry f1y fzy 40Sin4S-30sin3)=10,2N
= + =




x x
+
R3
=




R S2,3 +10,2 53,3N
=
=




>
M
E "
A
+
7
>

B -
B (pythag) resultant Hand E.:0 11
=
=




A vector


T in 7

F, +
=
5 > B INERTIAS NEWTONS FIRST LAL
A

mig first law:An object constantspeed

vectors
Newtons at rest or
moving with a



B continue to do unless acted upon
in a straight line will so by a




E, -
B i =



+ (- B):The
vector B in the resultant force.
opposite direction
and mass
uni

method Inertia of is the tendency to remain at
Memogram a
body rest or to



continue moving in
straight line with constant speed.

BEs make
a




I, y +
a
parallelogram The
mass of an object is a
quantitative measure of inertia




NEWTONS SECOND LAL-ACCELERATION


reno
i n
corporate

Newtons second law:if a resultant force acts on a mass the




Re
- Ry RSinC
= R2 Rx Ry2
= +




resulting acceleration is directly proportional to the force and inversely

Rx Rcosa
=
O ran" (s)
=



proportional to the mass. The direction of the acceleration is the same




1
as the resultant force

Ry The Gret
>
two components Rx and Rec will have ma
=




Rx

the same effect as the original vector R s i unit of force:Newton (N) 1
The =


Kg.m.s

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