Physics - Current Electricity Question with Solution | TestHub

A drum of mass $m_A$ and radius a rotates freely with angular velocity ${\omega }_A$. A second drum with mass $m_B$ radius $\mathrm{b}>\mathrm{a}$ is mounted on same axle and is at rest, although free to rotate. A thin layer of sand with mass $m_s$ is distributed on inner surface of small drum. At $t=0$, small holes in inner drums are made and sand start, to fly out at constant rate $\lambda \mathrm{kg}/\mathrm{s}$ and sticks to outer drum. Then after long time, select correct alternative (s) :