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If rope of lift breaks suddenly, the tension exerted by the surface of the lift (a = Acceleration of lift) is
Options
(a) mg
(b) m(g+a)
(c) zero
(d) m(g-a)
Correct Answer:
zero
Explanation:
If the rope suddenly breaks, acceleration = g
So substituting in formula, tension T=m(g−a)=0
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Topics: Laws of Motion
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- 300j work is done in sliding a 2kg block up an inclined plane of height 10m
- When a piece of metal is illuminated by a monochromatic light of wavelength λ,
- Ratio of the radii of the nuclei with mass numbers 8 and 27 would be
- A uranium nucleus ₉₂ U ²³⁸ emits an α-particle and a β-particle in succession.
- At the first minimum adjacent to the central maximum of a single-slit diffraction
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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