(a) Calculate the work done (in J) on a 1450 kg elevator car by its cable to lift it 39.5 m at constant speed, assuming

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answerhappygod
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(a) Calculate the work done (in J) on a 1450 kg elevator car by its cable to lift it 39.5 m at constant speed, assuming

Post by answerhappygod »

(a)
Calculate the work done (in J) on a 1450 kg elevatorcar by its cable to lift it 39.5 m at constant speed,assuming friction averages 105 N.
J
(b)
What is the work done (in J) on the lift by the gravitationalforce in this process?
J
(c)
What is the total work done (in J) on the lift?
J
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