Transcript Circular Motion

Circular Mtotion

In physics, circular motion is rotation along
a circle: a circular path or a circular orbit. It can
be uniform, that is, with constant angular rate of
rotation, or non-uniform, that is, with a changing
rate of rotation.
 Uniform circular motion is the motion of an object
in a circle with a constant or uniform speed.
 Non-uniform circular motion is any case in which
an object moving in a circular path has a
varying speed.
 The uniform circular motion represents the basic form
of rotational motion of the same manner as uniform
linear motion represents the basic form translational
motion. They, however are different with respect to the
requirement of force to maintain motion.
 In order that there is no change in the magnitude of
the velocity, the force should have 0 component along
the direction of velocity. It is possible only if the force
is perpendicular to the direction of velocity such that
its component in the direction of the velocity is 0.
Uniform Circular Motion
 The distance of one complete cycle around the
perimeter of a circle is known as the circumference.
 The circumference of any circle can be computed using
from the radius according to the equation:
Circumference = 2*pi*Radius
 Centripetal force is a force that makes a body follow
a curved path
 Centrifugal force represents the effects of inertia that
arise in connection with rotation and which are
experienced as an outward force away from the center
of rotation.