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

• 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