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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

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(1) 34500

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