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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
- The half life of radium is 1620 yr and its atomic weight is 226 kg per kilo mol.
- The distance of a geo-stationary satellite from the centre of the earth is nearest to
- In an L-C-R series resonant circuit, the capacitance is changed from C to 4C.
- Two radioactive materials X₁ and X₂ have decay constants 5λ and λ respectively
- A body takes 5 minute for cooling from 50⁰C to 40⁰C. Its temperature
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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