# What is circular motion? Mathematical formulas of circular motion

Rotation motion or circular motion refers to a type of motion where an object moves in a circular path around a fixed point. This motion can be observed in various mechanical systems, such as spinning wheels, rotating turbines, or a rotating Earth.

Mathematical Formula:
The mathematical formula that describes rotation motion is based on rotational kinematics and dynamics. Here are some fundamental equations:

1. Angular Displacement (θ): It represents the change in an object’s angular position and is measured in radians. The equation is given by:
θ = s / r
where:
θ = angular displacement
s = arc length or distance moved
r = radius of the circular path

2. Angular Velocity (ω): It measures the rate at which an object rotates or changes its angular position. The equation is given by:
ω = Δθ / Δt
where:
ω = angular velocity
Δθ = change in angular displacement
Δt = change in time

3. Angular Acceleration (α): It represents the rate at which an object’s angular velocity changes. The equation is given by:
α = Δω / Δt
where:
α = angular acceleration
Δω = change in angular velocity
Δt = change in time

4. Rotational Kinetic Energy (K): It represents the energy associated with an object’s rotation motion. The equation is given by:
K = (1/2) I ω^2
where:
K = rotational kinetic energy
I = moment of inertia of the rotating object
ω = angular velocity

These equations provide a basic understanding of rotation motion and can be further expanded or modified depending on specific circumstances or advanced applications.