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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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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
- With the decrease of current in the primary coil from 2 amperes to zero value
- An object is placed at a distance of 10 cm from a co-axial combination of two lenses
- A beam of light of λ=600 nm from a distant source falls on a single slit 1 mm wide
- A particle moves a distance x in time t according to equation x = (t + 5)⁻¹
- The threshold wavelength for photoelectric effect of a metal is 6500 Å. The work function
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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