Motion: A body is to be in motion when its position changes continuously with respect to a stationary object taken as reference point.
Uniform motion: A body has a uniform motion if it travels equal distances in equal intervals of time, no matter how small these time intervals may be.
Uniform speed: A body has a uniform speed if it travels equal distance in equal intervals of time, no matter how small these time intervals may be.
Circular motion: When a body moves in a circle, then the motion of the body is defined as circular motion.
Uniform circular motion: Any body when moves in a circular path with uniform speed then its motion is known as uniform circular motion. When a body moves in circular path, then its direction of motion keeps changing continuously. A force is needed to produce circular motion. The force which is needed to make an object travel in a circular path is called centripetal force.
Diagram of uniform circular motion:
Formula to calculate speed of a body in a uniform circular motion:
A body takes one round of a circular path, then it travels a distance equal to its circumference,
circumference = 2`Pi`r where r is the radius of the circular path.
The speed of the body moving along circular path is given as,
v = `(2pir)/(t)`
where, `Pi = 22/7` , r = radius of the circular path, t = time taken for one round of circular path.