An elevator is  pulled 4.00m upwards from rest with a rope under 13000N of tension. The weight of the elevator is 12000N What is the net force on the elevator? write Newton’s 2nd law as an equation then use it to find the acceleration of the elevator Use one of your uniform acceleration equations to find the speed of the elevator after it has gone the 4.00m  and round your answer as appropriate

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Chapter7: Work, Energy, And Energy Resources
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Problem 7PE: A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N...
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An elevator is  pulled 4.00m upwards from rest with a rope under 13000N of tension. The weight of the elevator is 12000N

  1. What is the net force on the elevator?
  2. write Newton’s 2nd law as an equation then use it to find the acceleration of the elevator
  3. Use one of your uniform acceleration equations to find the speed of the elevator after it has gone the 4.00m  and round your answer as appropriate 
  4. Now write  the work -energy theorem  then use it to find the elevators final kinetic energy  and speed. Your answer should be the same as it was from part 

 

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