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The mass of a lift is 2000kg. When the tension in the supporting cable is 28000N, then its acceleration is
Options
(a) 4ms⁻² upwards
(b) 4 ms⁻² downwards
(c) 14 ms⁻² upwards
(d) 30 ms⁻² downwards
Correct Answer:
4ms⁻² upwards
Explanation:
Net force, F = T – mg
ma = T – mg
2000a = 28000 – 20000 = 8000
a = 8000 / 2000 = 4 ms⁻² upwards
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The focal lengths of a converging lens are fᵥ and fᵣ for violet and red lights
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- A rod lies along the X-axis with one end at the origin and the other at x→∞. It carries
- In a laser tube, all the photons
- A horizontal straight conductor kept in north-south direction falls under gravity. Then
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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