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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 certain mass of Hydrogen is changed to Helium by the process of fusion
- The magnetic field due to a current carrying circular loop of radius 3 cm at a point
- The rest energy of an electron is
- If a nucleus ᴢXᴬ emits 9α and 5β-particles, then the ratio of total protons and neutrons
- Time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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