A wheel of moment of inertia $2.0\times {10}^3 {\mathrm{kgm}}^2$ is rotating at uniform angular speed of 4 ${\mathrm{rads}}^{-1}$. What is the torque required to stop it in one second.

• A

  $0.5 \times {10}^3 \mathrm{Nm}$

• B

  $8.0 \times {10}^3 \mathrm{Nm}$

• C

  $2.0 \times {10}^3 \mathrm{Nm}$

• D

  None of these