Question

rotational motion: crash course physics #11
crashcourse
multiple - choice question
which point has a greater angular velocity?
red
lime

Explanation:

Step1: Understand angular velocity

Angular velocity \(\omega=\frac{\Delta\theta}{\Delta t}\), where \(\Delta\theta\) is the change in angular displacement and \(\Delta t\) is the change in time.

Step2: Analyze for a rigid body

For a rigid body (like the wheel in the image), all points on the wheel complete the same number of rotations (i.e., have the same \(\Delta\theta\) in the same \(\Delta t\)) as the wheel rotates.

Answer:

Neither. Both points (assuming they are on the same rigid wheel) have the same angular velocity. In a rigid - body rotational motion, every point on the body has the same angular velocity. So, if “Red” and “Lime” are points on the same rigid wheel, they have equal angular velocities.