Physics · WORK, ENERGY AND POWER

An elevator can carry a maximum load of \( 1800\text{ kg} \) (elevator + passengers) and moves upwards with a constant speed of \( 2\text{ m s}^{-1} \). A constant frictional force of \( 4000\text{ N} \) opposes its motion. Taking \( g = 10\text{ m s}^{-2} \), the minimum power delivered by the motor to the elevator is:

1. A
   \( 36000\text{ W} \)
2. B
   \( 44000\text{ W} \)
3. C
   \( 40000\text{ W} \)
4. D
   \( 48000\text{ W} \)