Rotational kinematics is the branch of physics that studies the motion of objects rotating around an axis. It involves concepts such as angular displacement, angular velocity, and angular acceleration.
Rotational kinematics deals with the motion of objects rotating around an axis, while linear kinematics deals with the motion of objects in a straight line. This means that rotational kinematics involves concepts such as angular displacement and angular velocity, while linear kinematics involves concepts such as displacement and velocity.
Angular and linear quantities are related through the radius of rotation. The linear distance traveled by an object is equal to the angle of rotation (in radians) multiplied by the radius of rotation. This relationship is known as arc length = radius x angle.
Tension is a force that is applied to an object in order to cause it to rotate around an axis. In rotational kinematics problems, tension is often used to calculate the torque (rotational force) acting on an object, which is necessary to determine its rotational motion.
Sure, an example problem could be: A wheel with a radius of 0.5 meters is being pulled by a rope with a tension of 20 Newtons. What is the angular acceleration of the wheel if the moment of inertia is 2 kgm^2? In this problem, tension is used to calculate the torque on the wheel, which is then used to determine the angular acceleration using the equation torque = moment of inertia x angular acceleration.