In the given figure linear acceleration of solid cylinder of mass $m_2$ is $a_2$ . Then angular acceleration $\alpha_2$ is (given that there is no slipping)

821-289

  • A

    $\frac{{{a_2}}}{R}$

  • B

    $\frac{{\left( {{a_2} + g} \right)}}{R}$

  • C

    $\frac{{2\left( {{a_2} + g} \right)}}{R}$

  • D

    None of these

Similar Questions

Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are $v$ and $2v$ at any instant, then the speed of centre of mass of the system will be

If the angular momentum of a body is increased by $200\,\%$ then increase in its rotational kinetic energy will be ....... $\%$.

A hoop of radius $r$ and mass $m$ rotating with an angular velocity ${\omega _0}$ is placed on a rough horizontal surface. The initial velocity of the centre of the hoop is zero. What will be the velocity of the centre of the hoop when it ceases to slip?

A man of $50\, kg$ mass is standing in a gravity free space at a heigth of $10\,m$ above the floor. He throws a stone of $0.5\, kg$ mass downwards with a speed of $2\,m/s$. When the stone reaches the floor, the distance of the man above the floor will be ........ $m.$

Three bodies , a ring, a solid cylinder and a solid sphere roll down the same inclined  plane without slipping. They start from rest. The radii of the bodies are identical. Which  of the bodies reaches the ground with maximum velocity?