MCQ
Consider a sphere of mass $‘m’$ radius $‘R’$ doing pure rolling motion on a rough surface having velocity $\rho$ as shown in the Fig. It makes an elastic impact with the smooth wall and moves back and starts pure rolling after some time again.
- AChange in angular momentum about $‘O’$ in the entire motion equals $2mv_0R$ in magnitude.
- BMoment of impulse provided by the wall during impact about $O$ equals $2mv_0R$ in magnitude.
- CFinal velocity of ball will be $ - \frac{3}{7}{\vec v_0}$
- ✓All of the above

