Rolling Motion
A wheel of a bullock cart is rolling on a level road as shown in the figure below. If its linear speed is in the direction shown, which one of the following options is correct ( and are any highest and lowest points on the wheel, respectively)?

Show answer and solution
Answer: (b)
- In rolling, each point has velocity (translation) plus (rotation), with .
- Top point P: .
- Bottom point Q (contact point): .
- So the answer is (b): P moves faster than Q.