Question

If a driver gear has 10 teeth at 45 RPM compute the number of teeth needed for the driven gear at 90 RPM?

Answer 1

By formula,

Gear speed ratio is given by;

$\frac{T_1}{T_2}=\frac{N_2}{N_1}$$\begin{gathered} \frac{10}{T_2}=\frac{90}{45} \\ \text{Cross multiply to get.} \\ 90T_2=10\times45 \\ T_2=\frac{450}{90} \\ T_2=5\text{ t}eeth \end{gathered}$