·
Uniform Circular Motion: Motion of a body
with constant speed along the circumference of a circle.
·
Nonuniform Circular Motion: Motion of a body
with variable speed along the circumference of a circle.
·
Position Vector or Radius Vector: The vector drawn
from the centre of the circle to the position of the particle performing
circular motion.
·
Angular Displacement: The change in the angular position of
a particle with respect to some reference line.
·
Angular Speed: The rate at which the angle is traced by
the radius vector w.r.t. time.
·
Angular Velocity: The rate at which angular displacement
takes place w.r.t. time.
·
Angular Acceleration: Rate of change of angular velocity
w.r.t. time.
·
Period (T): The time by the particle to complete one
revolution.
·
Frequency of Revolution (n): The number of
revolutions made by the particle in one second.
·
Centripetal Force: The force acting on a body in
circular motion directed radially towards the centre.
·
Centrifugal Force: The radial force directed away from
the centre of the circle and acting on a body in a rotating frame of
reference.
·
Banking of Roads: To ensure the safety of a moving vehicle,
the surfaces of curved roads are made inclined to the horizontal with the
outer edge at a higher level than the inner edge. This is called banking of
roads.
