Circular Motion summary notes

nur Velocity
line at constant has zero acceleration
An
object moving in a
straight speed .


Linear velocity is
dyined as the velocity of an object rotating in
uniform circular motion with respects

to linear displacement as opposed to angular displacement .




u = V=
Vanguar vertised
ra


int w
=
The equations show that as the radis of the path increases
V =
r(z) = rw



.
so does the velocity
This means
angular velocity does not depend the on radius
whilst linear velocity does depend the radius on


Centripetal Acceleration

The Centripetal acceleration is
defined as the acceleration of an object towards the Centre
b
a



Circle When an
object is rotating around a circle at a constant
speed
is
always
&
centripetal acceleration
a = V = ru
directed towards the Centre the Circle
of


=
and is perpendicular the
objects
velocity
.




a = vw a= ru

Techniques to investigate circular motion
determined by tying buy and
The circular motion Con be a with a mass on to a piece as swing threading the
sking through
tube . The other end by the string has the weight of M suspended to it this wir provide the anripum
glass
a mass , ,
,




Whirled in a circle and the time
force ,
F =
Mg as the tension
throughout the
shing is constant
.
The string is twhen for ten

Complete rotations is luken , to increase the actually as the Then and repent
results .
change the mass a
the
weight
the procedure -
S ~
&

-




Y e
# als
m




Skin a hispaia unl
as



save