A crane motor lifts a load with mass $600\text{ kg}$. The load is raised vertically at a steady speed of $12\text{ m}$ per minute. What is the useful power output of the motor?
- A$0.12\text{ kW}$
- B$1.2\text{ kW}$
- C$7.2\text{ kW}$
- D$71\text{ kW}$
Physics 9702 · AS & A Level · Energy conservation