Question

A disc is performing pure rolling on a smooth stationary surface with constant angular velocity as shown in the figure. At any instant, for the lower most point of the disc
 

• A. velocity is \( v \), acceleration is zero
• B. velocity is zero, acceleration is zero
• C. velocity is \( v \), acceleration is \( \frac{v^2}{R} \)
• D. velocity is zero, acceleration is \( \frac{v^2}{R} \)

Hint:

In pure rolling motion, the velocity at the point of contact is zero, but the acceleration is non-zero and is given by \( \frac{v^2}{R} \).

Answer 1

The Correct Option is D