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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 surface tension of soap solution is 0.03 N/m. The work done in blowing to form a soap
- A block of mass m1 rests on a horizontal table. A light string connected
- A cell of emf E and internal resistance r supplies current for the same time
- A particle of mass m is driven by a machine that delivers a constant power k watts
- A rod of 10 cm length is moving perpendicular to uniform magntic field of intensity
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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