If there is no slip and the creep in the transmission, then whatis the equation for the velocity ratio in the open belt drive?

A

$$\frac{N_{1}}{D_{1}}=\frac{N_{2}}{D_{2}}$$

B

$$\frac{N_{1}}{D_{1}}=\frac{D_{2}}{N_{2}}$$

C

$$\frac{N_{1}}{N_{2}}=\frac{D_{2}}{D_{1}}$$

D

None of these