An electric hoist lifts a container of mortar from the ground to a height of 4.5 m. This lift takes a time of 15.0 s.
Use the data in the graph and table below to calculate the power needed to lift the container.
| Height (m) | Change in GPE (J) |
|---|---|
| 1.5 | 450 |
| 3.0 | 900 |
| 4.5 | 1350 |
| 6.0 | 1800 |
| 7.5 | 2250 |
Use the equation:
power=ΔGPEtime \text{power} = \frac{\Delta GPE}{\text{time}} power=timeΔGPE