Rotational speed is the measure of how fast an object rotates around its axis. It is usually measured in rotations per minute (RPM) or radians per second (rad/s).
To calculate rotational speed, you need to know the angular velocity and the radius of the object. The formula for rotational speed is rotational speed = (angular velocity) x (radius).
To solve the rotational speed homework problem, plug in the given values (angular velocity and radius of 40cm) into the formula for rotational speed: rotational speed = (angular velocity) x (40cm). Then, solve for the rotational speed in the appropriate units.
The unit for rotational speed can vary depending on the given values and the desired unit of measurement. However, common units for rotational speed include revolutions per minute (RPM) and radians per second (rad/s).
Rotational speed affects an object by determining how fast it rotates around its axis. A higher rotational speed means the object is rotating at a faster rate, while a lower rotational speed means it is rotating at a slower rate. This can affect the object's stability, stability, and other physical properties.