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A stone is tied to a string of length l and whirled in a vertical circle with the other end of the string as the centre.At a certain instant of time,the stone is at its lowest position and has speed u.The magnitude of the change in velocity as it reaches a position where the string is horizontal (g being acceleration due to gravity) is
Options
(a) √2(u² – gl)
(b) √(u² – gl)
(c) u – √(u² – 2gl)
(d) √2gl
Correct Answer:
√2(u² – gl)
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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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 ray of light is incident at an angle of incidence i, on one face of a prism
- The temperature of a metal block is increased from 27⁰C to 84⁰C. The rate of radiated energy
- In Moseley’s law √ν=a(z-b), the values of the screening constant for K-series
- The density of ice is 0.9 g/cc and that of sea water is 1.1 g/cc
- A coil of inductive reactance 31 Ω has a resistance of 8 Ω. It is placed in series
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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