GATE Mechanical 2025 | Question: 16

Question

​​​​​A rigid circular disc of radius $r$ (in $m$ ) is rolling without slipping on a flat surface as shown in the figure below. The angular velocity of the disc is $\omega$ ( in $\mathrm{rad} \mathrm{s}^{-1}$. The velocities (in $\mathrm{m} \mathrm{s}^{-1}$ ) at points $O$ and $A$, respectively, are

• A. $r \omega \hat{\imath}$ and $0 \hat{\imath}$
• B. $-r \omega \hat{\imath}$ and $0 \hat{\imath}$
• C. $-r \omega \hat{\imath}$ and $-r \omega \hat{\imath}$
• D. $r \omega \hat{\imath}$ and $r \omega \hat{\imath}$

Answer 1

A

Answer 2

Option A.