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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
Related Questions: - In which of the follows decays, the element does not change?
- An aeroplane flies 400m due to North and then 300m due to south and then flies
- The electric current in AC circuit is given by the relation i-3 sinωt+4 cos ωt.
- The ratio of longest wavelength corresponding to Lyman and Blamer series
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Topics: Laws of Motion
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In which of the follows decays, the element does not change?
- An aeroplane flies 400m due to North and then 300m due to south and then flies
- The electric current in AC circuit is given by the relation i-3 sinωt+4 cos ωt.
- The ratio of longest wavelength corresponding to Lyman and Blamer series
- Force required to move a mass of 1kg at rest on a horizontal rough plane
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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