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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
- A marble block of mass 2 kg lying on ice when given a velocity of 6 m/s is stopped
- Two coherent sources of intensity ratio α interfere. In interference pattern,
- From a disc of radius R, a concentric circular portion of radius r is cut-out so
- The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV
- Given A=4i+6j and B=2i+3j. Which of the following is correct?
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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