An electric lift with a maximum load of 2000kg (lift + passengers) is moving up with a constant speed of 1.5 ms^-1..

Question

An electric left with a maximum load of 2000kg  (lift + passengers) is moving up with a constant speed of 1.5 ms^-1.  The frictional force opposing the motion is 3000 N. The minimum power delivered by the motor to the lift in watts is: (g = 10ms^-2)

(1) 34500

(2) 23500

(3) 23000

(4) 20000

Answer 1

(1) 34500

Video solution with explanation