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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.
Related Questions: - A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically.
- The momentum of a body is increased by 20%.The percentage increases in kinetic energy
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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 monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically.
- The momentum of a body is increased by 20%.The percentage increases in kinetic energy
- For a series L-C-R circuit, the rms values of voltage across various components
- An electric motor runs on DC source of emf 200 V and draws a current of 10 A.
- If a small sphere is let fall vertically in a large quantity of still liquid of density
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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