Three industrial winches, W1W_1W1, W2W_2W2, and W3W_3W3, are used to lift heavy cargo containers vertically at a construction site. The table below shows the performance data for each winch.
| Winch | Cable Tension in kN\text{kN}kN | Height lifted in m\text{m}m | Work done in kJ\text{kJ}kJ | Time taken in s\text{s}s | Useful power output in kW\text{kW}kW |
|---|---|---|---|---|---|
| W1W_1W1 | 12 | 15 | 180 | 20 | 9.0 |
| W2W_2W2 | 15 | 150 | 12.5 | 12.0 | |
| W3W_3W3 | 16 | 15 | 240 | 7.5 |
Use the data in the table for Winch W3 W_3\,W3 to calculate the time taken to lift the cargo container.