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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
Related Questions: - A ball is dropped from a high rise platform at t = 0 starting from rest
- A car is moving with uniform acceleration. It covers 200 m in 2 sec and 220 m
- A ball rolls without slipping. The raidus of gyration of the ball about an axis
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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
- A ball is dropped from a high rise platform at t = 0 starting from rest
- A car is moving with uniform acceleration. It covers 200 m in 2 sec and 220 m
- A ball rolls without slipping. The raidus of gyration of the ball about an axis
- The displacement of an object attached to a spring and executing simple harmonic
- The innermost orbit of hydrogen atom has a diameter 1.06Å. The diameter of tenth
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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