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  • The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is:Option: 1 4 ms-2  

The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is:

Option: 1

4 ms-2   upwards.


Option: 2

4 ms-2   downwards.


Option: 3

14 ms-2   upwards.


Option: 4

30 ms-2 downwards.


Answers (1)

best_answer

Let us suppose the lift is going upward

T - mg = ma

 

28000- 2000\times 10 = 2000 \times a\\ a = 4m/s^{2}

So, our assumption is correct. The lift is going upward with acceleration 4m/s^{2}

Posted by

Ajit Kumar Dubey

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