Consider two masses with $m_1 > m_2$ connected by a light inextensible string that passes over a pulley of radius $R$ and moment of inertia $I$ about its axis of rotation. The string does not slip on the pulley and  the pulley turns without friction. The two masses are released from rest separated by a vertical distance $2 h$. When the two masses pass each other, the speed of the masses is proportional to

  • [KVPY 2016]
  • A

    $\sqrt{\frac{m_1-m_2}{m_1+m_2+\frac{I}{R^2}}}$

  • B

    $\sqrt{\frac{\left(m_1+m_2\right)\left(m_1-m_2\right)}{m_1+m_2+\frac{1}{R^2}}}$

  • C

    $\sqrt{\frac{m_1+m_2+\frac{I}{R^2}}{m_1-m_2}}$

  • D

    $\sqrt{\frac{1}{R^2}}$

Similar Questions

As shown in the figure, a bob of mass $\mathrm{m}$ is tied by a massless string whose other end portion is wound on a fly wheel (disc) of radius $\mathrm{r}$ and mass $m$. When released from rest the bob starts falling vertically. When it has covered a distance of $h$. the angular speed of the wheel will be

  • [JEE MAIN 2020]

A ring of mass $M$ and radius $R$ is rotating about its axis with angular velocity $\omega $. Two identical bodies each of mass $m$ are now gently attached at the two ends of a diameter of the ring. Because of this, the kinetic energy loss will be

  • [JEE MAIN 2013]

An energy of $484\,J$ is spent in increasing the speed of a flywheel from $60\,rpm$ to $360\,rpm$. The moment of inertia of the flywheel is $.............\,kg - m ^2$

  • [NEET 2022]

A solid sphere is rolling on a horizontal plane without slipping. If the ratio of angular momentum about axis of rotation of the sphere to the total energy of moving sphere is $\pi: 22$ then, the value of its angular speed will be $...........\,rad / s$.

  • [JEE MAIN 2023]

The angular velocity of a body is $\mathop \omega \limits^ \to   = 2\hat i + 3\hat j + 4\hat k$ and a torque $\mathop \tau \limits^ \to   = \hat i + 2\hat j + 3\hat k$ acts on it. The rotational power will be .......... $W$