What is the velocity ratio for a slip in the belt drive system?
1
\(\frac{{{N_1}}}{{{N_2}}} = \frac{{{d_1} + t}}{{{d_2} + t}}\left( {1 - \frac{s}{{100}}} \right)\)
2
\(\frac{{{N_2}}}{{{N_1}}} = \frac{{{d_1} + t}}{{{d_2} + t}}\left( {1 - \frac{s}{{100}}} \right)\)
3
\(\frac{{{N_2}}}{{{N_1}}} = \frac{{{d_1} - t}}{{{d_2} + t}}\left( {1 - \frac{s}{{100}}} \right)\)
4
\(\frac{{{N_2}}}{{{N_1}}} = \frac{{{d_2} + t}}{{{d_1} + t}}\left( {1 - \frac{s}{{100}}} \right)\)