A crane’s motor lifts a load with mass $600\,\text{kg}$. The load moves upward at a steady speed of $12\,\text{m min}^{-1}$. 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 · Gravitational potential energy and kinetic energy