41 force on the elevator has a constant value of 95 N , 33% Part (a) Calculate t

Question

41 force on the elevator has a constant value of 95 N , 33% Part (a) Calculate the work done on the elevator by its cable, in Joules. Grad Dedu Poten Submm Atten (20% r sin0 cotanO asin acos0 atan acotansinh0 4 5 6 1 2 3 detail oh tanh0 cot anh0 eDegrees Radians Submit Hint I give up Feedback: deduction per feedback. Hints:--deduction per hint. Hints remaining:- -- 33% Part (b) Calculate the work done by the gravitational force on the elevator, in joules, during this process. 33% Part (c) Calculate the total work done on the elevator, in joules ii All content 8 2017 Expert TA, LLC

Explanation / Answer

(a)

Work = Total force * distance

The total force is the sum of the weight of the elevator and the friction force.

Weight = 1300 * 9.81 = 12,753 N

Friction = 95 N.

So:

Work = (12753 + 95) * 41 = 526,768 J

(b) What is the work done on the lift by the gravitational force in this process?

The gravitational force is the weight of the elevator.

So: Work = 12753 * 41 = 522,873 J

c) What is the total work done on the lift? The lift is the elevator.

The total work done on the lift is equal to the work done by its cable

Total work done = 526,768 J

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