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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 uniform chain of length L and mass m is kept on a smooth table. It is released
- An electron in a circular orbit of radius 0.05 nm performs 10¹⁶ rev/s. The magnetic
- Two identical cells of the same e.m.f. and same internal resistance
- Consider two concentric spherical metal shells of radii r₁ and r₂( r₂>r₁). If the outer
- An electric charge 10⁻³ μC is placed at the origin (0,0) of X-Y co-ordinate system.
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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