The moments of inertia are different.Shridhar said:
In https://www.physicsforums.com/attachments/15531967174434896316018851325402-jpg.240611/ it is light (read, massless) wheels on a thin heavy axle. So negligible rotational KE about the mass centre.Shridhar said:
Rotational dynamics is a branch of physics that deals with the motion of objects that are rotating or spinning around a fixed axis. It involves the study of forces, torques, and angular motion.
1.68 and 1.264 are numerical values that represent the coefficients of inertia for different objects in rotational dynamics. These values are used in equations to calculate the moment of inertia, which is a measure of an object's resistance to rotational motion.
Rotational dynamics and linear dynamics are closely related as they both involve the study of motion and forces acting on objects. However, they differ in that rotational dynamics deals with objects that are rotating, while linear dynamics deals with objects that are moving in a straight line.
Rotational dynamics has many practical applications, such as in the design of machines and vehicles that involve rotating parts, such as engines, turbines, and propellers. It is also used in sports, such as figure skating and gymnastics, to understand and improve the performance of rotational movements.
While it may not be obvious, rotational dynamics plays a role in our daily lives. For example, when riding a bicycle, the rotation of the wheels and pedals is governed by principles of rotational dynamics. Similarly, when throwing a ball or swinging a bat, the motion of the object is influenced by rotational dynamics. Understanding these principles can help improve our skills in various activities and tasks.
