The wheels on the old-time bicycle shown in diagram have radii of $60.0 \mathrm{cm}$. and $10.0 \mathrm{cm}$. If the larger wheel is rotating at $12.0 \mathrm{rad} {\mathrm{s}}^{-1}$, what is the angular speed of the smaller wheel?

• A

  $12.0 \mathrm{rad} {\mathrm{s}}^{-1}$
• B

  $60.0 \mathrm{rad} {\mathrm{s}}^{-1}$
• Correct answer
  C

  $72.0 \mathrm{rad} {\mathrm{s}}^{-1}$
• D

  $2.0 \mathrm{rad} {\mathrm{s}}^{-1}$

Hence, the correct answer is option: 'C'.