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A mass m moves in a circle on a smooth horizontal plane with velocity v₀ at a radius R₀. The mass is attached to string which passes through a smooth hole in the plane as shown.
The tension in the string is increased gradually and finally m moves in a circle of radius R₀/2. The final value of the kinetic energy is
Options
(a) 1/4 mv₀²
(b) 2 mv₀²
(c) 1/2 mv₀²
(d) mv₀²
Correct Answer:
2 mv₀²
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions: - The magnetic field in a certain region of space is given by B =8.35×10⁻² Î T.
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Topics: Motion of system of Particles and Rigid Body
(73)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The magnetic field in a certain region of space is given by B =8.35×10⁻² Î T.
- A particle is kept at rest at the top of a sphere of diameter 42m.When disturbed slightly
- A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof
- A particle moves along a circle of radius 20/π m with constant tangential acceleration
- A lead bullet of 10 gm travelling at 300 m/s strikes against a block
Topics: Motion of system of Particles and Rigid Body (73)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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