Belt Slip (\( \%BS \)):

\[ \%BS = \frac{N0 - N1}{N0} \times 100 \]

Where:

• \( \%BS \) is the belt slip, in percentage (%).
• \( N0 \) is the revolution per minute of the driven pulley without slip, in rpm.
• \( N1 \) is the revolution per minute of the driven pulley under load, in rpm.