What is changing from negative to positive?elyons said:So the acceleration hits zero because it is changing from negative to positive but has an identical magnitude on both side of the point of contact? So the point has a tangential acceleration relative to the center of the wheel just not to the ground?
Rotational motion is the movement of an object around an axis or center point, rather than in a straight line. It is measured in terms of angular displacement, velocity, and acceleration.
Linear motion involves movement in a straight line, while rotational motion involves movement around an axis. In linear motion, the position, velocity, and acceleration of an object are measured along a single direction, whereas in rotational motion, they are measured along a circular path.
Rotational motion can be seen in many everyday objects, such as a spinning top, a merry-go-round, a Ferris wheel, a record player, and a spinning planet. It also occurs in more complex systems, such as the rotation of the Earth around its axis and the rotation of the planets around the sun.
The formula for rotational motion is similar to that of linear motion, but uses angular variables. For example, angular velocity is calculated by dividing the change in angular displacement by the change in time, and angular acceleration is calculated by dividing the change in angular velocity by the change in time.
Rotational motion has many practical applications in engineering and technology, such as in the design of gears, turbines, and engines. It is also used in robotics and manufacturing processes, such as in the rotation of industrial machinery and the movement of robotic arms.