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  1. The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is:​​
    1. 4 ms–2 upwards
    2. 4 ms–2 downwards
    3. 14 ms–2 upwards
    4. 30 ms–2 downwards
Correct Option: A

Net force, F = T – mg
ma = T – mg
2000 a = 28000 – 20000 = 8000

a =
8000
= 4ms-2
2000



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