A pair of straight teeth spur gears is transmitting power at $500 \mathrm{rpm}$. The pinion has 16 standard full depth involute teeth of module $8 \mathrm{~mm}$. The pitch line velocity of the pinion in $\mathrm{m} \mathrm{s}^{-1}$ (rounded off to two decimal places) is_______________
A pair of straight teeth spur gears is transmitting power at $500 \mathrm{rpm}$. The pinion has 16 standard full depth involute teeth of module $8 \mathrm{~mm}$. The pitch line velocity of the pinion in $\mathrm{m} \mathrm{s}^{-1}$ (rounded off to two decimal places) is_______________